[Solved] Looping through GridDataItem's in button OnClick outside of Grid

[Ronnie]

Hello,

I need to use a for loop instead of a foreach loop to update all the TextBox values(txtQuantity), but I don't know how to reference/cast the GridDataItem to the RadGrid while not being inside of a RadGrid event.
This OnClick works on the most part.  But if evaluates to false it just continues.  I need it to stop.

      protected void btnUpdateCart_Click(object sender, EventArgs e)
      {
         // TODO: Use for loop to stop when an expression evaluates to false.
         //for (int i = 0; i < grdCart.Items.Count; i++)
         foreach (GridDataItem dataItem in grdCart.MasterTableView.Items)
         {
            // TODO: Cast (GridDataItem)dataItem here and remove foreach
            string strItemId = dataItem.GetDataKeyValue("ID").ToString();
            RadTextBox txtQuantity = (RadTextBox)dataItem.FindControl("txtQuantity");
            int itemId, quantity;
            bool success = false;

            if (Int32.TryParse(strItemId, out itemId) && Int32.TryParse(txtQuantity.Text, out quantity))
            {
               success = _cartItem.Update(itemId, quantity);
            }

            lblFeedback.Text = success ? "Your cart has been successfully updated!" : "There was an error updating your cart.<br />Please verify that the quantity value is a number and try again.";
         }

         grdCart.Rebind();
      }

Thank you in advance,
Ronnie

[Princy]

Hi Ronnie,

The following code shows the way you can refer GridDataItem in a for loop in an external button OnClick event. You can exit from the for loop by using the break statement.

C#:

protected void btnUpdateCart_Click(object sender, EventArgs e)

{

for (int i = 0; i < grdCart.MasterTableView.Items.Count; i++)

{

GridDataItem dataItem = (GridDataItem)grdCart.MasterTableView.Items[i];

string strItemId = dataItem.GetDataKeyValue("ID").ToString();

TextBox txtQuantity = (TextBox)dataItem.FindControl("txtQuantity");

int itemId, quantity;

bool success = false;

if (Int32.TryParse(strItemId, out itemId) && Int32.TryParse(txtQuantity.Text, out quantity))

{

success = _cartItem.Update(itemId, quantity);

lblFeedback.Text = "Your cart has been successfully updated!";

}

else

{

lblFeedback.Text = "There was an error updating your cart.<br />Please verify that the quantity value is a number and try again.";

break;

}

}

RadGrid1.Rebind();  }

Hope this helps,
Princy.

[Ronnie]

Thank you Princy,

I was under the idea that a for loop automatically breaks at false, my mistake.
Thank you for including the break statement.  With that I can still use the foreach loop.  It's down to preference now.

Either way, now I know how to get a specific GridDataItem by index.  That will come in quite handy!

Thanks again,
Ronnie