C# - GridView Returning Null When Try To Grab The GridView To Display Data?
Jul 12, 2010
I am trying to return the table of Users and display it on a page which uses a masterpage.
My master page file called AjaxMaster.Master looks like this -
[code].....
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Feb 8, 2010
This problem is driving me nuts. I have labels inside a gridview. When i reference them, i keep getting a null error. This is definatly that it cant find the labels inside the template. below is my code that i am using.
[Code]....
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Sep 2, 2010
I'm trying to retreive values entered by users in the textboxes in the footer of the gridview and insert these values into another sql table.My code is as follows :-
protected void GridView2_RowCommand(object sender, GridViewCommandEventArgs e)
{
if(e.CommandName.Equals("addnew"))
{
TextBox t1 = (TextBox)GridView2.FooterRow.FindControl("tfrm");
string frm = t1.Text;
TextBox t2 = (TextBox)GridView2.FooterRow.FindControl("tsub");
string sub = t2.Text;
string cmd = "insert into suggestions values('" + frm + "','" + sub + "','c','c')";
con.Open();
SqlCommand com = new SqlCommand(cmd,con);
int a = com.ExecuteNonQuery();
GridView2.DataBind();
con.Close();
}
}
But the strings 'frm' and 'sub' returns null values.
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Apr 14, 2010
I have a GridView with an ItemTemplate and an EditTemplate:
[code]....
I am able to go into Edit Mode and once in edit mode I can see the textBox tbLogEntry fine. lblLogEntry is gone. I have left regular Item mode and am in Edit mode:
[code]........
gives me back the original value, not the new one.
How do I get the edited value from the front end textbox?
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Apr 3, 2013
i am using a gridview in my web page,i used to bind the database records to the gridview..my columns are name,empid,company name,pl leave,sl leave,total leave taken here total leave taken is not a database fields,in the page i want to fill the records once loaded pl leave and sl leave is added and display in the total leave taken column..it working properly when all pl ans sl columns fill with numbers,if some pl and sl leave having blank values.it showing an error like input sting was not in correct format..this is my code
<Columns>
<asp:BoundField DataField="slno" HeaderText="SerialNo"
SortExpression="slno" />
<asp:BoundField DataField="ecode" HeaderText="Employee Code"
SortExpression="empcode" />
<asp:BoundField DataField="ename" HeaderText="Employee Name"
[code]....
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Dec 6, 2010
I have setup my business object to have a create_date and edit_date members both datetime datatypes. My company want to display the create_date and edit_date fields in a gridview for each transaction. The problem i have is that after insterting a record it will have a valid create_date but no edit_date and when displayed in the gridview it defaults to datetime.minvalue (My default). How on earth do i show an empty field in my gridview for a null datetime field in the database?
I am using similar architecture to the Imar Spaanjaars example of a tiered solution. With a few small tweeks it has worked well for me for ages. I am passing a List<Database> to my object datasource which connects to my gridview.
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Sep 2, 2010
Gridview is not being populated now that i built my objectdatasource in the code behind.. why. If i build the source on the aspx page and configure it that way, it returns results.. but when i try to build it in the code behind it just displays my empty template for the gridview.
[Code]....
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Jul 8, 2010
i want to get dynamically the Data Source value from which system iam acessing the website and concatenate in connection String
but still showing null value
[Code]....
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Dec 1, 2010
I have GridView in UserControl (ascx) who is in another ascx.
[Code]....
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Nov 6, 2013
I'm having trouble getting selected rows in asp.net. i tried to debug it and found out that the answer to "chkRow.Checked" is always false eventhough it is selected. I'm new to asp.net.here is my code.
Protected Sub btnApproveYes_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnApproveYes.Click
Dim modID As String = String.Empty
For Each row As GridViewRow In gvModule.Rows
[Code]......
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Jun 14, 2010
I have been struggling with this and it must be somthing I am missing. I have Griview and go to edit te row and when I click update and step through the rowupating procedure the value for CollectAmtEdit and txtCollectDate give te old values. If I do not bind them originally then they return blanks after I enter data in them. Here is the form Logic:
[Code]....
Code behind:
[Code]....
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Jan 13, 2010
If the gridview binds to empty dataset, I need to still show a gridview so that users can ADD more using the textfields in the bottom of the footer template. Since the gridview is empty it won't bind not allowing rendering of the <footer template> I guess I should create a empty dataset if the gridview is empty. How do I check for this and can this be done in GridviewRowEventArgs
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Sep 20, 2015
I just want to open only one panel at a time., if we try to open second panel error message is return.
<script type="text/javascript">
function ShowPanel(btnAttendId) {
var btnAttend = $('[id$=' + btnAttendId + ']');
var row = $('[id$=' + btnAttendId + ']').closest("tr");
$(row).after("<tr><td colspan='999'>" + $('[id*=pnlTab]').html() + "</td></tr>");
$(btnAttend).hide();
};
[CODE]..
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Dec 18, 2013
[URL] .... In this I have a select option gridview property enable selection. i want when i click the select butoon the data of this come to the text box ... like if gridview row contain item --unit --cost
item comes to textbox1,unit comes to textbox 2 and cost comes to textbox 3
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May 7, 2015
i want to show selected row of gridview into textbox then we can change these value then we click update button then these value add into selected row., this row show the update value not previous using jquery . following my code.
<script type="text/javascript" src="~/Scripts/jquery-1.10.2.js"></script>
<script type="text/javascript">
$(document).ready(function () {
// function Edit() {
var par = $(this).parent().parent();
var id = par.children("td:nth-child(1)");
var name = par.children("td:nth-child(2)");
[Code].....
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Jun 5, 2010
i am using gridview to bind data from stored procedure. When i test query it get succeeded and shows all the data but when i run the page it does not show anything
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Nov 8, 2010
I have 3 grid views in my ASP.net application Viewing the data from different tables and search input with button( for all 3 grid view One input field), when i give input and click on serach button only one Grid view should be appear rest of the 2 gridviews should be hide but for me when i change the input values previous Grid view also remain stationed on the screen.Gridviews are GVOpenorder,GVShip,GvSchedule and input field name is txtSearch,button name is btnSearch.
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Jan 8, 2011
In a nested GridView (GridView inside a template column of parent GridView). I am binding child GridView to a DataTable in parent GridView's RowDataBound event. this works as it should. But the problem i am facing is in Child GridView's RowDataBound Event, when i try to access e.Row.DataItem property it returns null. I am expecting it to return DataRowView Type. which i will then use to set values of TextBox's.
[code]....
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Sep 12, 2013
In my asp.net+vb web there are gridview
in my first gridvew1 the fields are
ser, company,location
in my gridview2 the fileds are name,company,qualification
when i click the company name the persons working in that company should display
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Nov 9, 2010
I take a gridview on my web form ,In one column i display image & view link.My prob is that when any row has not image then do not show view link.
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Sep 7, 2010
i have a gridview binded with data when i hover mouse to row i want to display a image button to display date ,and when i click the button i want to display calender control for choose date, and next step after i choose date it will be must insert into database. and mean while a hidden label control will display and date shuld be display in it
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May 7, 2015
After saving image in db how can we retrieve it in gridview like thumbnail size image and by clicking on image in gridview its open as preview. How can we do this in asp.net using c#.
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Oct 12, 2010
I want to display gridview column heading when mouse over to the particular column in the gridview.I am working in VisualStudio 2005 with MS.Net2.0 framework.I don't want to use ajax.
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Nov 9, 2010
i have a grid view that displays a load of figures, and as there is a lot of zero's in these tables i wondered if it would be possible to just display nothing were there is a "0" ... just to make it look cleaner?
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Apr 13, 2010
I have a Gridview showing the data on one of my tables, and when I try to edit the data in one of the columns after I click update, rather than updating the record with the new value I typed in, the rows become null as in, everything in the row I just edited disappears. This inmediatly makes my application crash because one of the fields in my table (IssueDescription) doesn't allows null values.
This is the code, which is actually 100% auto-generated from when I created the GridView control and specified in the options to implement update, delete, edit options.
<asp:GridView ID="GridView1" runat="server" AllowPaging="True"
AutoGenerateColumns="False" DataKeyNames="ticketNum"
DataSourceID="SqlDataSource1" [code].....
What is making the rows turn into null after the update? I did some research and tried to define the Update behaviour myself using RowUpdating function. After hours of learning how to use it I got it to "work", but because the Update turns everything to null when it updates, the sqlconnection command I use to do the query sends null anyways. I can paste the C# code if you'd like to see it, though I'd rather not use it if the auto-generated by asp above can be fixed instead.
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