Set Focus to Textbox in Gridview inside Update Panel

Let’s see how to set focus to textbox inside Gridview inside Update Panel.

So the Gridview is designed something like this..

<asp:UpdatePanel ID="UpdatePanel1" runat="server">

<ContentTemplate>

<asp:GridView ID="gvattend" runat="server" CellPadding="5"

AutoGenerateColumns="false" AllowPaging="true" PageSize="50"

GridLines="none" HeaderStyle-CssClass="tableheadbg" BorderStyle="solid" RowStyle-CssClass="nestedtable" AlternatingRowStyle-CssClass="nestedtable1"

BorderColor="#a3b4a0" BorderWidth="1px" Width="100%" TabIndex="6" >

<Columns>

<asp:TemplateField HeaderText="Marks Obtained" >

<ItemTemplate>

<asp:Textbox id="txtmarksobtain" runat="server" Width="150" AutoPostBack="true" OnTextChanged=" txtmarksobtain _TextChanged" >asp:Textbox>

ItemTemplate>

asp:TemplateField>

<asp:TemplateField HeaderText="Percentage" >

<ItemTemplate>

<asp:Textbox id="txtpercentage" runat="server" Width="150" Enabled="false" >asp:Textbox>

<asp:CompareValidator ID="cmp3" runat="server" ControlToValidate="txtpercentage" Operator="DataTypeCheck" Type="Double" ErrorMessage="Enter Numeric Value Alone" Display="dynamic" ValidationGroup="subject">asp:CompareValidator>

ItemTemplate>

asp:TemplateField>

Columns>

<EmptyDataTemplate>

<table width="100%" cellpadding="5" cellspacing="5">

<tr><td align="center" valign="middle" ><span class="redcolor">No Data Foundspan> td>tr>

table>

EmptyDataTemplate>

<RowStyle CssClass="nestedtable" />

<HeaderStyle CssClass="tableheadbg" />

<AlternatingRowStyle CssClass="nestedtable1" />

asp:GridView>

ContentTemplate>

asp:UpdatePanel>

And in the Code Behind:

Protected Sub txtmarksobtain _TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles txtmaxmarks.TextChanged

For Each gv As GridViewRow In gvattend.Rows

Dim txtmarksobtain As TextBox = DirectCast(gv.FindControl("txtmarksobtain"), TextBox)

If txtmarksobtain.Text = "" Then

ScriptManager.RegisterStartupScript(Me, Me.GetType(), "selectAndFocus", "$get('" + txtmarksobtain.ClientID + "').focus();$get('" + txtmarksobtain.ClientID + "').select();", True)

End If

Next

End Sub

And thus focus is set to textbox inside Gridview