Forms Data Controls :: GridView - RowUpdating Not Firing
Apr 1, 2010
I've put a simple gridview on my Asp.net webpage. I've configured the fields via C# code:
gvMainDataGrid.AutoGenerateColumns = false;
gvMainDataGrid.AutoGenerateDeleteButton = false;
BoundField bfldSeqNmbr = new BoundField();
bfldSeqNmbr.DataField = "PKSequenceNmbr";
bfldSeqNmbr.Visible = false;
gvMainDataGrid.Columns.Add(bfldSeqNmbr);
BoundField bfldEmployeeCode = new BoundField();
bfldEmployeeCode.DataField = "Employee Code";
bfldEmployeeCode.HeaderText = "Employee Code";
gvMainDataGrid.Columns.Add(bfldEmployeeCode);
BoundField bfldProjectCode = new BoundField();
bfldProjectCode.DataField = "Project Code";
bfldProjectCode.HeaderText = "Project Code";
gvMainDataGrid.Columns.Add(bfldProjectCode);
BoundField bfldProcessCode = new BoundField();
bfldProcessCode.DataField = "Process Code";
bfldProcessCode.HeaderText = "Process Code";
gvMainDataGrid.Columns.Add(bfldProcessCode);
BoundField bfldActivityDate = new BoundField();
bfldActivityDate.DataField = "Date";
bfldActivityDate.HeaderText = "Date";
gvMainDataGrid.Columns.Add(bfldActivityDate);
BoundField bfldActivityHours = new BoundField();
bfldActivityHours.DataField = "Activity Hours";
bfldActivityHours.HeaderText = "Activity Hours";
gvMainDataGrid.Columns.Add(bfldActivityHours);
CommandField cfldDeleteButton = new CommandField();
cfldDeleteButton.ShowDeleteButton = true;
gvMainDataGrid.Columns.Add(cfldDeleteButton);
It's data source is a Dataset retrieved from a webservice. Here is the C#code to bind the data to the gridview
Service1 MyService = new Service1();
dsMainData = MyService.GetData(strIdNumber);
gvMainDataGrid.DataSource = dsMainData;
gvMainDataGrid.DataBind();
It retrieves great. No problems at all. Then, when I actually try to use the delete button, I get an error that the RowDeleting event is not being handled. I thought that was pretty explicit, so I created the event:
private void gvMainDataGrid_RowDeleting(Object sender, GridViewDeletedEventArgs e)
{
return;
}
Well.....that didn't work. So, I thought that maybe I needed to configure it via the actual aspx file. So, I changed
<asp:GridView ID="gvMainDataGrid" runat="server">
</asp:GridView>
to this:
<asp:GridView ID="gvMainDataGrid" runat="server" ondeleting="gvMainDataGrid_RowDeleting">
</asp:GridView>
But, no avail. I've scoured the web and tried so many combinations of capital letters and whatnot -- but no effect.
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Similar Messages:
Jul 13, 2010
Here is the code with the issue:
[Code]....
The value of txtName, for example, contains the value prior to editing and clicking update. Here is the grid code:
[Code]....
View 17 Replies
Apr 23, 2010
I have a GridView on my page and I have bound a custom DataSource (DataTable populated from an SQL query) within an UpdatePanel. I have set the OnRowUpdating property and create the code behind stuff as well as setting AutoGenerateEditButton to true. The problem I have is that when I click on 'Edit', then change some values then click 'Update', I can only get the old values.
.ASPX
[Code]....
All of the other posts I have read have mentioned the GridView being bound on post back or within a RowDataBound event but I'm pretty sure that I am not doing that.The RowUpdating event does fire but the value of Jockey, for example, is still the original.
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Mar 18, 2010
[Code]....
Dynamic Gridview is Empty on RowUpdating
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Aug 31, 2010
I have a GridView within a GridView. I want o access child gridview's rowupdating event. i want to update row.
this is my GridView's code as follows
[Code]....
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Mar 26, 2010
[Code]....
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Sep 24, 2010
my gridview row updating events return old values.. edititem templatefield gets its old value on row updation.
My code is as follows :-
[Code]....
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Nov 25, 2010
I have a GridView ona "View Order" page which pulls data from a table: an item name, its description, the quantity ordered, the unit price and the total (item) cost: unit price * quantity ordered. This data, including the calculation for total cost is handled on the previous "Place Order" page using a Stored Procedure.
I want the user on the "View Order" page to be able to hit the standard "Edit" link (Command Field over at the left) and then change the "Quantity" field. This works fine and, when "Update" is hit, the field reflects the change.
PROBLEM: Because the Total Cost is calculated on the previous page, thsi doesn't change, I need to calculate it again.
WHAT I'VE TRIED: I've stripped the TotalCost field out of the SqlDataSource Update commands and attempted to use e.NewValues in the RowUpdating event handler to inject the new calculation. This doesn't work.
WHAT HAPPENS: The "ViewOrder" page refreshes, the new quantity is there but the TotalCost has not changed. No errors reported.
Is this the right way to do it and, if so, is my code okay? Here it is:
ASPX for ViewOrder:
[Code]....
And here's the Code Behind for ViewOrder:
[Code]....
"OrderMealValue" is the field for the Total Cost.
The fourth colum contains the Quantity and the fifth the price for one item.
View 2 Replies
Jan 21, 2011
I am populating a column in a gridview with a dropdownlist as follows:
[Code]....
[Code]....
When I edit the gridrow, the dropdown is there and I can select a new item.
But I can't find the dropdown during the rowupdated event. The cell control says it's a Textbox. All of the other items in the row are fine and I can get the data back. But I can't get the DropDown item.
Here are some of the things I have tried in the RowUpdating event:
DropDownList test = (DropDownList)e.FindControl("ddlPeriod");
//null
DropDownList ddl = (DropDownList)GridView1.Rows[e.RowIndex].FindControl("ddlPeriod");
//Also null
var test = row.Cells[8].Controls[0];
//Says its a textbox.
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Mar 3, 2010
I have a GridView. I allow editing using:
[Code]....
As I allow editing of row, so I have GridView:RowUpdating(). In it, I check if the entered value is valid. If not, I have e.Cancel = true.
[Code]....
After I see the message box comes up, the textbox still stays the same. I expect the textbox will disappear just as if I have pressed the Cancel button. (By the way, the ClientUtil is a class someone has written for me.)
How do I make the e.Cancel = true works as if I press the Cancel button.
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Jun 17, 2010
I am trying to update the row using gridview_rowupdating event but I am unable to update. I tried the code like this...
foreach (GridViewRow i in GridView1.Rows)
{
TextBox sname = i.FindControl("sname") as TextBox;
TextBox fname = i.FindControl("fname") as TextBox;
TextBox sex = i.FindControl("txtsex") as TextBox;
// Label lblpin1 = i.FindControl("lblpin") as Label;
TextBox tpin = i.FindControl("txtpin") as TextBox;
tpin.Enabled = true;
// lblpin1.Enabled = true;
string pinno;
pinno = Convert.ToString(tpin.Text.Trim());
conn2.Open();
SqlCommand cmd = new SqlCommand("update NRDetails2010 set SNAME='" + sname + "',FNAME='" + fname + "',SEX='" + sex + "' where pin='" + pinno.Trim() + "' and InstCode='" + Session["UId"] + "' and Sem='" + ddlsem.SelectedItem.Text + "' and scheme='"
+ ddlscheme.SelectedItem.Text.Trim() + "' ", conn2);
cmd.ExecuteNonQuery();
conn2.Close();
}
I am getting error at cmd.ExecuteNonQuery()
Here I am giving connection globally and opening in this event. In gridview, I am updating 3 fields depending on 4 conditions.
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Dec 17, 2010
The table serving as the data source is a simple access table.
[Code]....
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Mar 15, 2010
I have a Modified Date and Modified By column in my gridview and I want them to be updated with the current date and current user any time a user updates the row.
I converted my columns to template fields and the textboxes in the edititemtemplate are bound to my sql data columns "ModifiedDate" and "ModifiedBy"
Then I added the attached code in my RowUpdating event.
When I test the code and click the Update link on my gridview I don't get an error but the values don't update either. I put a breakpoint on the code and when I hover over "ModifiedDateLabel.Text" I see the old value of the field so I know I'm accessing the control correctly.
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Feb 1, 2010
I'm creating a GridView in code. I can successfully attach handlers for Editing, and CancelEditing. RowUpdating never runs, however. Instead, if the GridView is in a Panel, the Edit handler is called when Update is clicked (and this is the command name I get back on the Update click, too). If the GridView is not in a panel, then the Cancel handler is called when Update is clicked (again, this is the command name I get back from clicking Update). I've searched high and low for a reason why the RowUpdating event is not getting called, and I can't find one. Does anyone out there haveHere is my code (My actual code is much more involved than this, but for testing purposes, I extracted the following code and stuck it in a new project to isolate my problem):
protected void Page_Init(object sender, EventArgs e)
{
if (!IsPostBack)
[code]...
View 1 Replies
Jun 12, 2012
Specified argument was out of the range of valid values.Parameter name: index
After adding a check box to gridview when i am updating teh gridview I get above error
cmd.Parameters.Add("@c_name", SqlDbType.VarChar).Value = ((TextBox)Gridview1Rows[0].Cells[1].Controls[0]).Text;
cmd.Parameters.Add("@c_amt", SqlDbType.VarChar).Value = ((TextBox)Gridview1Rows[0].Cells[2].Controls[0]).Text;
cmd.Parameters.Add("@c_type", SqlDbType.VarChar).Value = ((TextBox)Gridview1Rows[0].Cells[3].Controls[0]).Text;
cmd.Parameters.Add("@check", SqlDbType.Bit).Value = ((CheckBox)Gridview1Rows[0].Cells[4].Controls[0]).Checked;
Before to checkbox addition it was wroking fine
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Jun 16, 2015
i ask what code can generate on how to Populate and save ASP.Net Dropdownlist with Selected Value in Gridview Rowupdating ?
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Oct 21, 2015
When I am executing the below code on Visual Studio 2008, then it is executing properly with out any error. But when i am executing it on Visual Studio 2012, then it showing me following error (System.NullReferenceException: Object reference not set to an instance of an object) at line 64
Why is it so?
.vb Code is below :
Imports System.Data.SqlClient
Imports System.Data
Partial Class grid
Inherits System.Web.UI.Page
Function constr() As String
Dim i As New IO.StreamReader(Server.MapPath("constr.config"))
[Code] ...
HTML code:
<asp:GridView ID="GridView1" runat="server" CellPadding="4" EmptyDataText="no record found" ForeColor="#333333" GridLines="None" AllowPaging="True" HorizontalAlign="Center" Width="303px" AutoGenerateColumns="False">
<AlternatingRowStyle BackColor="White" ForeColor="#284775" />
<EditRowStyle BackColor="#999999" HorizontalAlign="Center" VerticalAlign="Middle" />
<FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
[Code] ....
View 1 Replies
Oct 12, 2010
i have the following nested gridview
i could get the inner gridview onRowDataBound working by setting that directly in the gridview
but i cannot get the linkbutton's onrowCommad inside the inner gridview working!!!
it does not fire the event even i have set it directly in the gridview
here is the code in my app_code page
[code]....
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Apr 2, 2010
How to get the id of the row in gridview, DataKeyField="OrderID"
Protected Sub dgdOrders_RowUpdating(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewUpdateEventArgs) Handles dgdOrders.RowUpdating
end sub
View 2 Replies
Jan 6, 2010
I'm using a GridView to display some columns and rows that reside in a database. This works excellent. Because i wanted to add columns dynamically out of a List of names. Let's say we have a list with 5 names in it, then it dynamically creates a column for every name in the GridView.
Here's some code to display what i do:
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
//Create columns for each student
List<Student> allStudents = new Eetlijst.Business.Students().GetAll();
allStudents.Reverse();.......
How do i create the dynamic columns for each row? I create them with a DataBound event. So when the GridView databinds, the columns get filled with data. There is also a check inside to see if the row is in edit mode or not. So when i click on the edit button next to the row, the row goes perfectly in edit mode. The code i made adds a TextBox control to the cell.
When i fill in a value and press the Update button, it can't find any controls anymore and therefore i can't get the value i entered. The control is still there in the DataBound when i put a break point after it. But as soon as i click the Update button, all the controls of the cells are gone.
I searched on the internet and all i found is that it has something to do with the application firing a postback before it reaches the RowUpdating method.
So, how can i let the controls exist that i added to the cell when it is in edit mode?
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May 11, 2010
I have a gridview that I'm trying to update the Date something is corrected in the database. When I am putting a new value in, it is updating, but it isn't updating the new value, just the old one that is already there. I cannot figure out why this is happening.
[Code]....
View 8 Replies
Dec 13, 2010
I am using a gridview and want to update the row.. but i am unable to do it.... pls help me out where i am going wrong.... here is the code for the gridview nd rowupdating event.
<asp:GridView ID="GridView1" runat="server" Width="514px" AllowPaging="True"
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May 20, 2010
It's breaking at spot below in RowUpdating Event with the error msg "Index was out of range. Must be non-negative and less than the size of the collection"
txtAddress = CType(GridView1.Rows(e.RowIndex).FindControl("txtAddress"), TextBox).Text
Here's my code:
ASP
<form id="form1" runat="server">
<asp:GridView id="GridView1" runat="server" CssClass="Grid" DataKeyNames="ID"
AllowPaging="false"
OnRowEditing = "GridView1_RowEditing" OnRowDeleting = "GridView1_RowDelete"
OnRowUpdating = "GridView1_RowUpdating"
AutoGenerateColumns="False"
EnableViewState="false" ShowFooter="true">
<FooterStyle ForeColor="#4A3C8C" BackColor="#B5C7DE"></FooterStyle>
<HeaderStyle Font-Bold="True" ForeColor="#F7F7F7" BackColor="#4A3C8C"></HeaderStyle>
<Columns>
<asp:TemplateField HeaderText="ID">
<ItemTemplate>
<%#Eval("ID")%>
</ItemTemplate>
<FooterTemplate>
<asp:Button id="btnAdd" Runat="server" Text="Add New" CommandName="Insert"></asp:Button>
</FooterTemplate>
</asp:TemplateField>
<asp:CommandField ShowEditButton="true" EditText="Edit" HeaderText="Edit" CausesValidation="false"/>
<asp:CommandField ShowDeleteButton="true" EditText="Delete" HeaderText="Delete />
<asp:TemplateField HeaderText="mlsnum">
<EditItemTemplate>
<asp:TextBox ID="txtMls" runat="server" Text='<%# Eval("mlsnum") %>'/>
</EditItemTemplate>
<ItemTemplate>
<%#Eval("mlsnum")%>
</ItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtMLS" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="reqMLS"
runat="server" ControlToValidate="txtMLS"
Display="Dynamic"
ErrorMessage="You must enter an MLS #.">
* </asp:RequiredFieldValidator>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Address">
<EditItemTemplate>
<asp:TextBox ID="txtAddress" runat="server" Text='<%# Eval("Address") %>'/>
</EditItemTemplate>
<ItemTemplate>
<%#Eval("Address")%>
</ItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtAddress" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="reqAddress"
runat="server" ControlToValidate="txtAddress"
Display="Dynamic"
ErrorMessage="Please enter an address.">
* </asp:RequiredFieldValidator>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Subdivision">
<EditItemTemplate>
<asp:TextBox ID="txtSubdivision" runat="server" Text='<%# Eval("subdivision") %>'/>
</EditItemTemplate>
<ItemTemplate>
<%#Eval("Subdivision")%>
</ItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtSubdivision" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="reqSubdivision"
runat="server" ControlToValidate="txtSubdivision"
Display="Dynamic"
ErrorMessage="Please enter a Subdivision.">
* </asp:RequiredFieldValidator>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Price">
<EditItemTemplate>
<asp:TextBox ID="txtPrice" runat="server" Text='<%# Bind("Price") %>'/>
</EditItemTemplate>
<ItemTemplate>
<%#Eval("Price")%>
</ItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtPrice" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="reqPrice"
runat="server" ControlToValidate="txtPrice"
Display="Dynamic"
ErrorMessage="Please enter an Price.">
* </asp:RequiredFieldValidator>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Agent">
<ItemTemplate>
<%#Eval("Agent")%>
</ItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtAgent" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="reqAgent"
runat="server" ControlToValidate="txtAgent"
Display="Dynamic"
ErrorMessage="Please enter an Agent.">
* </asp:RequiredFieldValidator>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Comment">
<EditItemTemplate>
<asp:TextBox ID="txtComment" runat="server" Text='<%# Eval("Comment") %>'/>
</EditItemTemplate>
<ItemTemplate>
<%#Eval("Comment")%>
</ItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtComment" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="reqComment"
runat="server" ControlToValidate="txtComment"
Display="Dynamic"
ErrorMessage="Please enter a Comment.">
* </asp:RequiredFieldValidator>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="PhotoAd">
<EditItemTemplate>
<asp:checkbox ID="chkPhotoAd" runat="server" Checked=true/>
</EditItemTemplate>
<ItemTemplate>
<asp:checkbox id="chkPhotoAd" runat="server" Enabled="true" />
</ItemTemplate>
<FooterTemplate>
<asp:CheckBox ID="chkAddPhotoAd" runat="server" Enabled="true" />
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="LineAd">
<EditItemTemplate>
<asp:checkbox ID="chkLineAd" runat="server" Checked=true/>
</EditItemTemplate>
<ItemTemplate>
<asp:checkbox id="chkLineAd" runat="server" Enabled="true" />
</ItemTemplate>
<FooterTemplate>
<asp:CheckBox ID="chkAddLineAd" runat="server" Enabled="true" />
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="# of Balloons">
<EditItemTemplate>
<asp:TextBox ID="txtNumBalloons" runat="server" Text='<%# Eval("NumBalloons") %>'/>
</EditItemTemplate>
<ItemTemplate>
<%# Eval("NumBalloons")%>
</ItemTemplate>
<FooterTemplate>
<asp:TextBox ID="intNumBalloons" runat="server"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
VB
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If Not Page.IsPostBack Then
Try
BindData()
Catch ex As Exception
'Error Handler
lblError.Visible = True
lblError.Text = Err.Description()
'lblError.Text = Err.Number
End Try
End If
End Sub
Sub BindData()
Dim ds As New DataSet
Dim objDS = New DataSet
Dim cmd As SqlCommand
Dim dataAdapter As New SqlDataAdapter
strSqlConnection = ConfigurationManager.AppSettings("ConnectionString")
sqlConn = New SqlConnection(strSqlConnection)
strSqlStatement = "select * from tblAdSignup"
cmd = New SqlCommand(strSqlStatement, sqlConn)
dataAdapter.SelectCommand = cmd
dataAdapter.Fill(ds)
objDS.DataSetName = "ds"
GridView1.DataSource = ds
GridView1.DataBind()
End Sub
Protected Sub GridView1_RowEditing(ByVal sender As Object, ByVal e As GridViewEditEventArgs)
GridView1.ShowFooter = False
GridView1.EditIndex = e.NewEditIndex
BindData()
End Sub
Protected Sub GridView1_RowCancel(ByVal sender As Object, ByVal e As DataGridCommandEventArgs)
GridView1.ShowFooter = True
GridView1.EditIndex = -1
BindData()
End Sub
Protected Sub GridView1_RowUpdating(ByVal sender As Object, ByVal e As GridViewUpdateEventArgs)
'Try
'BindData()
'Dim eRow As Int16 = e.RowIndex
'Dim id2 As Integer
ID = GridView1.DataKeys(e.RowIndex).Value
'ID2 = GridView1.DataKeys(1).Value
Dim txtAddress, txtAddress2 As String
'Dim test As Integer
'test = GridView1.Rows(0).Cells.Count
'Dim strAddress As String = DirectCast(GridView1.Rows(e.RowIndex).FindControl("txtAddress"), TextBox).Text
'Dim txtAddress As TextBox
'txtAddress = DirectCast(GridView1.Rows(e.RowIndex).FindControl("txtAddress"), TextBox)
txtAddress = CType(GridView1.Rows(e.RowIndex).FindControl("txtAddress"), TextBox).Text
'txtAddress2 = GridView1.Rows(0).Cells(0).Text
'txtAddress2 = CType(GridView1.SelectedRow.FindControl("txtAddress"), TextBox).Text
'
'Catch ex As Exception
' 'Error Handler
' lblError.Visible = True
' lblError.Text = Err.Description()
' 'lblError.Text = Err.Number
'End Try
End Sub
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Nov 3, 2010
I cant for the life of me get the PageIndexChanging event to fire. Please advice.
<asp:GridView ID="gridViewTransactionList" runat="server" AutoGenerateColumns="False"
AllowPaging="True" BackColor="White" BorderColor="#3366CC" BorderStyle="Solid"
BorderWidth="1px" CellPadding="4" PageSize="10"
onpageindexchanging="gridViewTransactionList_PageIndexChanging"
ondatabinding="gridViewTransactionList_DataBinding"
onpageindexchanged="gridViewTransactionList_PageIndexChanged">
<Columns>
<asp:BoundField ItemStyle-Width = "150px" DataField = "RowNumber" HeaderText = "RowNumber" />
</Columns>
<RowStyle BackColor="#D7E5F5" ForeColor="#0F253F" CssClass="gridViewTransactionList" />
<AlternatingRowStyle BackColor="#F5F9FD" ForeColor="#0F253F" />
<FooterStyle BackColor="#99CCCC" ForeColor="#0F253F" />
<PagerStyle BackColor="#99CCCC" ForeColor="#0F253F" HorizontalAlign="Left" />
<SelectedRowStyle BackColor="#009999" Font-Bold="True" ForeColor="#CCFF99" />
<HeaderStyle BackColor="#538ED5" Font-Bold="True" ForeColor="#0F253F" />
</asp:GridView>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="btnConfirmDeletetransaction" EventName="Click" />
<asp:AsyncPostBackTrigger ControlID="gridViewTransactionList"
EventName="PageIndexChanging" />
</Triggers>
</asp:UpdatePanel>
protected override void OnInit(EventArgs e)
{
gridViewTransactionList.PageIndexChanging += new GridViewPageEventHandler(gridViewTransactionList_PageIndexChanging);
gridViewTransactionList.DataBind();
}
protected void gridViewTransactionList_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
DataTable dataTable;
gridViewTransactionList.PageIndex = e.NewPageIndex;
if (Session["TransactionDataTable"] != null)
{
dataTable = (DataTable)Session["TransactionDataTable"];
gridViewTransactionList.DataSource = dataTable;
gridViewTransactionList.DataBind();
}
}
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Feb 17, 2010
protected void grdMain_RowDataBound(object sender, GridViewRowEventArgs e)
{
}
<asp:GridView ID="grdMain"
runat="server"
OnRowDataBound="grdMain_RowDataBound"
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