FindControl inside Editable GridView

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Hello everyone,

I have implemented editable GridView. There i have two fields Quantity and Value.

It has third field called Total.I want to get total by quantity*value. For that i have made Value textbox AutoPostBack="true" added event handler(txtbx_TextChanged) for it in RowDataBound Event of GridView.

I am trying to access Quntity and Value fields inside that event handler that is txtbx_TextChanged. I tried like this,

C#

TextBox txtTotal = gv.Rows[index].cells[0].Controls[0].FindControl("TOTAL") as TextBox;

But,this shows me error for index.What should be there in place of index ? Rows[?]..?

I just want to know in textchanged event,how to get index of that Row in which i am processing that two textboxes.

I would appreciate any help. Thanks.

Posted 26-Aug-13 21:48pm

Coder_one

Updated 26-Aug-13 22:44pm

v2

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Comments

Jignesh Khant 27-Aug-13 4:56am

Try like this:
string comments = (((TextBox)row.FindControl("txtcomments")).Text).ToString();

Coder_one 27-Aug-13 5:12am

What is 'row' here?

3 solutions

Solution 3

As you asked "I just want to know in textchanged event,how to get index of that Row in which i am processing that two textboxes."

Solution 2 is sufficient for you.

But what happen if you enter data in Value first ?? You TextChanged event will be fired and start calculating quantity * value while there is no data in quantity field. PROBLEM!!!
Even after this if you enter data in quantity field, TextChanged event will not fire untill you again change data in Value field.

So its better to add a LinkButton(in same Or different column) and give it some CommandName and handle it OnRowCommand like this -

ASP.NET

<asp:gridview runat="server" id="GridView1" onrowcommand="GridView1_RowCommand" ...="" xmlns:asp="#unknown">

...
<itemtemplate>
                    <asp:linkbutton id="LinkButton1" commandname="calculateTotal" commandargument="<%# Container.DisplayIndex %>" runat="server">LinkButton</asp:linkbutton>
</itemtemplate>
...

</asp:gridview>

In code behind -

C#

protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{

  if (e.CommandName == "calculateTotal")
  {
    int rowindex=intParse(e.CommandArgument.ToString());
    int quantityfield = int.Parse(((TextBox)gv.Rows[rowindex].FindControl("txtQuantity")).Text);
    int valuefield = int.Parse(((TextBox)gv.Rows[rowindex].FindControl("txtValue")).Text);    

    TextBox result = (TextBox)gv.Rows[rowindex].FindControl("TOTAL");
    result.Text = (quantityfield * valuefield).ToString() ;
  }
}

Thats All :)

Posted 27-Aug-13 1:20am

Anand Kumar Prajapati

Updated 27-Aug-13 1:23am

v2

Comments

Coder_one 29-Aug-13 3:26am

I appreciate your suggestion,but due to some requirements i can't add link button. I figured out that problem and adjusted it accordingly. Thanks for the consideration.

Solution 1

TextBox txtTotal =(TextBox) gv.Rows[e.RowIndex].FindControl("TOTAL");

Try this, it will work

Posted 26-Aug-13 22:06pm

Libin C Jacob

Comments

Coder_one 27-Aug-13 4:43am

It shows same error because e.RowIndex can't be accessed inside txtbx_TextChanged. That is the main problem.

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Murali0195 · Accepted Answer · 2013-08-27T00:06:00

Solution 2

Hi...
See this one to find control in gridview.

GridViewRow gvRow = (GridViewRow)(sender as Control).Parent.Parent;
string txtreply = ((TextBox)gv.Rows[gvRow.RowIndex].FindControl("txtreply")).Text;

Am used like,its working fine.
thank u.

Posted 27-Aug-13 0:06am

Murali0195

Updated 27-Aug-13 0:09am

v2

Comments

Coder_one 27-Aug-13 6:30am

Thanks alot. Murali. It works like a charm..! Thanks again.

[no name] 27-Aug-13 6:49am

U are welcome.