Pre-populate a textbox on insert new

[Kati]

I need to add a default value to one of the textboxes when adding a new item in the grid

<telerik:GridTemplateColumn HeaderText="Activity ID" SortExpression="activityID" UniqueName="activityID"  >

                    <ItemTemplate>

                        <%# Eval("activityID")%>

                    </ItemTemplate>

                    <EditItemTemplate>

                        <asp:TextBox runat="server" ID="txtActivity" Text='<%# Bind("activityID") %>' />

                        <asp:RequiredFieldValidator runat="server" ID="rfvActivity" ControlToValidate="txtActivity" Display="Dynamic" ErrorMessage="*" />

                    </EditItemTemplate>

                </telerik:GridTemplateColumn>

 

 

When clicking “Add new recored” I need to pre-populate the txtActivity textbox. How can I access this from the code behind?

 

I tried this with no success

protected void RadGrid1_ItemCommand(object source, GridCommandEventArgs e)

        {

            if (e.CommandName == RadGrid.InitInsertCommandName)

            {

                GridEditableItem editedItem = e.Item as GridEditableItem;

                TextBox t = (TextBox)(editedItem.FindControl("txtActivity"));

            }

        }

 

And this:

 

protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)

        {

            if (e.Item is GridCommandItem && e.Item.OwnerTableView.IsItemInserted)

            {               

                TextBox txtActivity = (TextBox)e.Item.FindControl("txtActivity");

                txtActivity.Text = "300";

            }

}

I am running out of ideas.

Please help. Thanks

[Jayesh Goyani]

Hello,

Try with below code snippet.

protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)

   {

       if (e.Item is GridDataItem)

       {

           GridDataItem item = e.Item as GridDataItem;

 

       }

 

       if (e.Item is GridEditableItem && e.Item.IsInEditMode)

       {

           if (e.Item is GridEditFormInsertItem)
              //  if (e.Item is GridDataInsertItem) // EditMode="inplace"


           {

               GridEditableItem editedItem = e.Item as GridEditableItem;

               TextBox txtActivity = (TextBox)editedItem.FindControl("txtActivity");

 

               txtActivity.Text = "300";

           }

 

       }

   }

Thanks,
Jayesh Goyani

[Shinu]

Hi,

Please take a look into the following code snippet.

C#:

protected void RadGrid1_ItemCommand(object sender, Telerik.Web.UI.GridCommandEventArgs e)
{
    if (e.CommandName == RadGrid.InitInsertCommandName)
    {
        e.Canceled = true;
        e.Item.OwnerTableView.InsertItem();
        GridEditableItem insertedItem = e.Item.OwnerTableView.GetInsertItem();
        GridEditFormItem editFormItem = insertedItem as GridEditFormItem;
        TextBox t = (TextBox)(editFormItem.FindControl("txtActivity"));
        t.Text = "hello";
    }
}

Thanks,
Shinu.

[Kati]

sorry, but none of the solutions you posted work :(

Object reference not set to an instance of an object.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

Line 54: GridEditableItem insertedItem = e.Item.OwnerTableView.GetInsertItem(); Line 55: GridEditFormItem editFormItem = insertedItem as GridEditFormItem; Line 56: TextBox t = (TextBox)(editFormItem.FindControl("txtActivity"));Line 57: t.Text = "hello"; Line 58: }

[Kati]

I found the problem

GridEditableItem insertedItem = e.Item.OwnerTableView.GetInsertItem();

   GridEditFormItem editFormItem = insertedItem as GridEditFormItem;

        TextBox t = (TextBox)(editFormItem.FindControl("txtActivity"));



on line 3 editFormItem  should be insertedItem


Thanks :)