How do I get the update value of a texbox in a footerrow

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given that I have this object in my grid view:

asp:TemplateField HeaderText="Display Text" SortExpression="DisplayText">
        <ItemTemplate><%# Eval("DisplayText") %></ItemTemplate>
        <EditItemTemplate>
           <asp:TextBox ID="txtDisplayText" Text='<%# Eval("DisplayText") %>' runat="server"></asp:TextBox>
        </EditItemTemplate>
        <FooterTemplate>
             <asp:TextBox ID="txtDisplayText" Text="xxx" runat="server"></asp:TextBox>
        </FooterTemplate>
</asp:TemplateField>

When I type a value into the txtDisplayText I do not see what I typed when the event OnRowCommand is executed. Rather I see the text defined in the aspx file for txtDisplayText("xxx").
What have I missed?

What I have tried:

fiddling with viewstate; searching this site; Google

Posted 12-Dec-18 7:34am

RmcbainTheThird

Updated 12-Dec-18 8:00am

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Richard Deeming 12-Dec-18 13:49pm

What code are you using to try to read the value?

string text = ((TextBox)yourGridView.FooterRow.FindControl("txtDisplayText")).Text;

RmcbainTheThird 12-Dec-18 13:54pm

yes, that is how I am grabbing the value

Richard Deeming 12-Dec-18 13:50pm

Are you binding the grid on every page load, without checking the IsPostBack property first?

RmcbainTheThird 12-Dec-18 13:54pm

yes I am. is that an oopsie :)

Richard Deeming 12-Dec-18 13:57pm

Yes. Every time you bind the grid, it throws away anything that the user typed in, and recreates the controls. :)

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Richard Deeming · Accepted Answer · 2018-12-12T08:01:00

As discussed in the comments, the problem is caused by binding the grid on every page load without checking the IsPostBack property first.

Every time you bind the grid, it throws away anything that the user has typed, and recreates the entire grid control tree based on the markup and the data.

Instead of:

protected void Page_Load(object sender, EventArgs e)
{
    BindGrid();
}

Use:

protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        BindGrid();
    }
}