Asp – Which event fires after using the Cancel command on a DetailsView

asp.netpage-lifecycle

I need to perform a few checks (enable or disable a label elsewhere on the page) after the user Inserts or Cancels the DetailsView. I have to do this because the DropDownList.SelectedIndexChanged doesn't fire during this event (which is dumb in my opinion, since the index DOES change).

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ModeChanging should fire, so can you do this?

protected void DetailsView1_ModeChanging(object sender, DetailsViewModeEventArgs e)
{
    if (e.CancelingEdit)
    {
        //Checks
    }
}

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R – Am I supposed to be able to alter other controls from an ASP.NET page event handler

Are you sure you're events are firing in the order you expect? Put breakpoints on all your postback methods and watch what happens, are you resetting the enabled state anywhere? do you have enableviewstate=false on anything?

Edit: You realise CheckedChanged doesnt fire until you postback from another control, or you have AutoPostBack=true on the checbkbox?

This works fine:

<asp:Label runat="server" ID="lblTest">test</asp:Label>
<asp:CheckBox runat="server" ID="chkCheck" AutoPostBack="true" />Check

protected override void OnInit(EventArgs e)
{
    base.OnInit(e);
    chkCheck.CheckedChanged += chkCheck_CheckedChanged;
}

private void chkCheck_CheckedChanged(object sender, EventArgs e)
{
    lblTest.Enabled = false;
}

C# – GridView Event RowCreated it happens after rendereing of controls

You're searching for a cell with index "RowIndex" in your row.

protected void uxListAuthorsDisplayer_RowCreated(object sender, GridViewRowEventArgs e)
{
    // Skip the header and footer rows
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        Label myLabel = (Label) e.Row.FindControl("uxUserIdDisplayer");
    }
}

I prefer to use the RowDataBound event, since that one occurs when the data has been bound to the row, so that you can access the data via DataBinder.Eval(e.Row.DataItem, "a data item")

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Related Solutions

R – Am I supposed to be able to alter other controls from an ASP.NET page event handler

C# – GridView Event RowCreated it happens after rendereing of controls

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