I would like to display a gridview in which:
I want to create 2 columns and 5 rows and want to give heading to those 2 columns and would like to manually enter the values in the rows, how ? (I don't want to connect this gridview with the database)
I have a manual binding to a grid view. After that, I found out the Grid_View.Columns.Count still give me 0.
I tried to set this:
AutoGenerateColumns="False"
After I set this value, the gridview become empty. Wonder if the False causing the column count to be 0.
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I have a manually binded gridview, which I set AutoGenerateColumns=False. I then tried to set AllowSorting=true at runtime, but it wont work.
My gridview are created during runtime.
I have created a GridView, but the DataSet is created manually.Do I loose the built-in sort functionality of a Gridview? ....because I'm getting an unhandled exception when I try and click on the header now to sort. So I assume the answer is YES.
View 5 RepliesI implement a manual sorting codes. It works only for ASC sorting. If you try to sorting gridview again by the same field it does not work. I mean how to solve for the sorting function for DESC
my codes for sorting
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I have manually databinded my gridview , but problem is it won't show 2nd page index .... here's a chunk of code :
<asp:CheckBox ID="SARecords" OnCheckedChanged="SARecords_OnCheckedChanged" AutoPostBack="True" CssClass="tooltips" data-original-title="View all mapped phases." data-rel="tooltip" data-placement="top" runat="server"></asp:CheckBox>
<asp:UpdatePanel ID="ExistingMappedUpdatePanel" UpdateMode="Conditional" runat="server">
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I have a gridview which uses an EditItemTemplate and an ItemTemplate for an 'Effect' column. The ItemTemplate simply displays the bound data using a label control. The EditItemTemplate defines a databound DropDownlist control which contains all the possible selections.
The gridview also contains a bound 'State' column which gives the State of each row. I have already been able to access this field in the gridview_RowDataBound event, so far using the value to decide whether to re-colour a row or not. What I would like to do is use this value to determine whether to use the ItemTemplate or the EditItemTemplate for each row.
Effectively I want to be able to decide whether to display just the data (For an Approved row) or display the DropDownList and allow the user to make updates (For an In Work row). I have searched for information on this issue online but have not found a lot, so I presume that my approach is not possible.
I've posted this some place else but have not heard from anyone and hoping I get better luck here.
Note: Sorry about the formating, not sure what happened.
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I go this code that can so a manual sorting on grid view. The code works fine for "ASC", when I wanted to sort the field to DESC, it never works. Second, it also failed when I switch to another page. Case 1: By default, the column is sorted DESC, then I switch to ASC, works fine, then I switch to DESC, it failed (remain at ASC).Case 2: By default, the column is sorted DESC, then I switch to ASC, works fine, then I switch to other page, it failed (remain at DESC on new page).
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I've been trying to marry up the listview and the Data pager with my own, Database class that pulls the information from the database.
I can display the information ok no problem, fortunately this time I know what the problem is, but I cannot figure out a way around the problem.
In my Page_Load event I fill out the listview accordingly:
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The problem lies in the postback, I need to figure out a way get the information as to what state the DataPager is in so I could update the Query accordingly.
I know there is a StartRowIndex avaialbe but this does not get updated in the Page_Load event.
I have a GridView or DetailsView and its bound to a CslaDataSource.I noticed that the "Object_Select()" event is fired automatically with every time the page is loaded or refreshed.How I can perfrom mnaual biding between the DetailsView Control and CslaDataSource ?I want to control binding via code using the DetailsView.DataBind() method in certain cases only.
View 4 RepliesI have GridView that is bound to an ObjectDataSource and within that GridView I have CheckBox, DropDownList, TextBox and Label controls. All the controls except the CheckBoxs are working like a champ or normal display and Delete (Insert is handled outside the GridView, it works also). The CheckBox values are passed into the update method for the ObjectDataSource as type byte. Without doing any custom coding the CheckBoxs were always unchecked (regardless of the data being 1 or 0) and when I edit a row in the GridView and saved the values the CheckBox controls would always be 0 even if the check boxes where checked. After searching web I found a suggestion to change the binding on the CheckBox controls from, Bind("Monday") to this, CheckUncheck(DataBinder.Eval(Container.DataItem, "Monday")) with CheckUncheck being a method to make 0 or null = false and 1 = true. This seemed to the do the trick and it set the CheckBoxs correctly in the DataGrid, I was giving myself high-fives, until I tried to update a row.
When doing the update, as with my first attempt, it would always set the CheckBox values to 0, thus ignoring the checked property of the CheckBox. So I search the web again and found a suggestion to handle the update manually, due to the binding being one way. So I created a myUnhappyGrid_RowUpdating event handler and changed all the columns in the GridView to template so I could do the old school .FindControl on them and grab the values. Once I was able to grab the values from the row to be updated I added them to the ObjectDataSource .UpdateParameters and called ObjectDataSource.Update() and it worked, kind of. Now came the next trial, it did the update into the database just fine and I was happy, until. I finished stepping though the code. As I stepped through the code the update on the ObjectDataSource got called two more times, thus undoing what I had just spent hours fixing. First, is the road traveled the right way to do it? Second, if I am on the correct road how can I suppress the additional two updates that follow my manual .update call on the ObjectDataSource?
In my database having 50 records,i wnt to display the first 10 record on first page of gridview and next 20 record on second page and so on..
View 1 RepliesI have a gridview that shows all data from a table. DataNames includes KeyId, which is a Primary Key.Yet when I try to delete a record, nothing happens, the page appears to performa refresh but the record is still there.Edit does not work either. I used the wizard to build all of the queries, they look okay. But I cannot figure out why they are not working.
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m using gridview to display records from sql server2005. In gridview, I have a field containing checkboxes. Now what i want that the fields against which a user checked in checkboxes that will be deleted by clicking on delete button just like the emails yahoo, gmail etc How can i do so?
View 2 RepliesI have a requirement like this to insert records into a table...
Tab1 - Row1(Column1) ab2-Row1(Column1) Tab3-Row1(Column1) Tab3-Row1(Column2)
Tab3-Row2(Column1) Tab3-Row2(Column2)
Tab3-Row3(Column1) Tab3-Row3(Column2)
Add New row Tab2-Row2(Column1) Tab3-Row1(Column1) Tab3-Row1(Column2)
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I want to bind only the first 10 records from the dataset to a gridview.how to do this?
View 2 RepliesConsider the following senario:
1. User sets the records of a gridview to edit mode; that locks all the records of the gridview.
2. Then either session expires or closes the application or browser.
3. All records of the gridview are now locked.
How can we give warning to user or unlock the records.
I habe a arraylist that can pass in the result of a quiz and once the user finishes this quiz, the result will be displayed in a gridbiew which is binded into a sqldatasource. In this gridbiew, there is this column which will highlight the the result of this qn which displays correct and incorrect. what i want to do now is, i want to count the number of correct answers. I want to count all the correct answers and bind it to a label in the same page.
View 2 RepliesI am buliding the shopping cart appliCation in C#.I want to edit the quantity field in grid view in shopping cart for a product.How do I?
View 9 RepliesI have a formview with both edititem template and item template as following:
<asp:FormView ID="PFTFormView" runat="server"
DataKeyNames="PFTId"
EnableModelValidation="True" Width="90%"
OnItemUpdating="PFTFormView_ItemUpdating"
onmodechanging="PFTFormView_ModeChanging" >
<EditItemTemplate>
<table>
<tr><td class="style1">PFTId</td><td class="style3"><asp:Label ID="lblPFTId" runat="server" Text='<%# Eval("PFTId") %>' /></td></tr>
<tr><td class="style1">Last Name</td><td><asp:TextBox ID="txtPFTLastName" runat="server" Text='<%# Bind("PFTLastName") %>' Width="200px" /></td></tr>
<tr><td class="style1">First Name</td><td><asp:TextBox ID="txtPFTFirstName" runat="server" Text='<%# Bind("PFTFirstName") %>' Width="200px" /></td></tr>
<tr><td class="style1">Home</td><td><asp:TextBox ID="txtPFTHome" runat="server" Text='<%# Bind("PFTHome") %>' Width="200px" /></td></tr>
</table><br />
<asp:LinkButton ID="UpdateButton" runat="server" CausesValidation="True"
CommandName="Update" Text="Update" />
<asp:LinkButton ID="UpdateCancelButton" runat="server"
CausesValidation="False" CommandName="Cancel" Text="Cancel" />
</EditItemTemplate>
<ItemTemplate>
<table>
<tr><td>PFTId</td><td><asp:Label ID="lblPFTId" runat="server" Text='<%# Eval("PFTId") %>' /></td></tr>
<tr><td>Last Name</td><td> <asp:Label ID="lblPFTLastName" runat="server" Text='<%# Bind("PFTLastName") %>' /></td></tr>
<tr><td>First Name</td><td><asp:Label ID="lblPFTFirstName" runat="server" Text='<%# Bind("PFTFirstName") %>' /></td></tr>
<tr><td>Home</td><td> <asp:Label ID="lblPFTHome" runat="server" Text='<%# Bind("PFTHome") %>' /></td></tr>
</table><br />
<asp:LinkButton ID="EditButton" runat="server" CausesValidation="False"
CommandName="Edit" Text="Edit" />
</ItemTemplate>
</asp:FormView>
on my code behind, I have:
Sub PFTFormView_ItemUpdating(ByVal sender As Object, ByVal e As FormViewUpdateEventArgs)
Dim PFTObj As New PFT
Dim PFTDST As New Data.DataSet
Dim newPFTLastName As String = DirectCast(PFTFormView.FindControl("txtPFTLastName"), TextBox).Text
Dim newPFTFirstName As String = DirectCast(PFTFormView.FindControl("txtPFTFirstName"), TextBox).Text
PFTObj.PFTLastName = newPFTLastName
PFTObj.PFTFirstName = newPFTFirstName
PFTObj.PFTHome = DirectCast(PFTFormView.FindControl("txtPFTHome"), TextBox).Text
If PFTObj.UpdatePFT(Session("PFTId")) Then
Me.lblErrorMessage.Text = "PFT Update Successfully"
Else
'
Me.lblErrorMessage.Text = "PFT Update UnSuccessfully"
End If
PFTDST = Nothing
PFTObj = Nothing
end sub
The problem is:
PFTObj.PFTLastName = newPFTLastName
PFTObj.PFTFirstName = newPFTFirstName
PFTObj.PFTHome = DirectCast(PFTFormView.FindControl("txtPFTHome"), TextBox).Text
are not returning the updated value from the form.
I have written a code from here http://www.aspsnippets.com/Articles/Display-GridView-with-Empty-Message-and-Header-and-Footer-when-no-data-in-ASP.Net.aspx. I just edited this as follows. this is my gridview code:-
<asp:GridView ID="gvCustomers" runat="server" Width="550px" AutoGenerateColumns="false"
Font-Names="Arial" Font-Size="11pt" AlternatingRowStyle-BackColor="#C2D69B" HeaderStyle-BackColor="green"
AllowPaging="true" PageSize="10">
<Columns>
<asp:BoundField HeaderText="State Name" DataField="StateName" FooterText="Footer" />
<asp:BoundField HeaderText="Organizatio Name" DataField="OrganizatioName" FooterText="Footer" />
<asp:BoundField HeaderText="Partner Name" DataField="PartnerName" FooterText="Footer" />
</Columns>
<AlternatingRowStyle BackColor="#C2D69B" />
<EmptyDataTemplate>
<table cellspacing="0" rules="all" style="font-family: Arial;
font-size: 11pt; width: 550px; border-collapse: collapse;">
<tr style="background-color: Green;">
<th scope="col">
State Name
</th>
<th scope="col">
Organization Name
</th>
<th scope="col">
Partner Name
</th>
</tr>
<tr>
<td colspan = "3" align = "center">
No Data found.
</td>
</tr>
</table>
</EmptyDataTemplate>
</asp:GridView>
and my code file code is as follows
SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["contest"].ConnectionString);
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
Bind_Grid();
}
}
protected void Bind_Grid()
{
string strSql = "select * from mtblInformation";
SqlCommand com = new SqlCommand(strSql,con);
SqlDataAdapter sda = new SqlDataAdapter(com);
DataTable dt = new DataTable();
sda.Fill(dt);
if (dt.Rows.Count > 0)
{
gvCustomers.DataSource = dt;
gvCustomers.DataBind();
}
}
when in database table have records then gridview binds and its showing records, But when there is no record in DB , instead of showing msgs that "No Data found." gridview doesn't appear.
How can I get gridview and detailsview to show up when there are no records. I need this for my edit's
View 4 RepliesI am trying to delete records from a gridview using checkboxes and a button. What would be the best way to do this using vb.net?
View 6 Repliesi have a gridview connected with a sqlDatatsource that show/update records and that work fine
now what if i want to edit records quickely like in excell for example
so the left/right arrows to switch between columns up/down arrows to switch between records
i want to use this grid to edit invoice like table is the gridview suitable for this kind of use or i have to use another component (DB aware ideally)?