select all the checkbox in agridview

Question

Hi frnz
how can i select all the checkboxes in agridview
<asp:GridView ID="gvApplicable" runat="server" AutoGenerateColumns="False"
AllowSorting="True" AllowPaging="True" PageSize="15" onrowediting="gvApplicable_RowEditing"
onpageindexchanging="gvApplicable_PageIndexChanging" Height="127px"
onselectedindexchanged="gvApplicable_SelectedIndexChanged" Width="213px" >
<Columns>
<asp:TemplateField >
HeaderTemplate>
<asp:CheckBox ID="chkSelectAll" runat="server" AutoPostBack="true"
OnCheckedChanged="chkSelectAll_CheckedChanged"/>
</HeaderTemplate>

<ItemTemplate>
<asp:CheckBox ID="Chk1" runat="server" />
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField ReadOnly="true" DataField="DeptCode" HeaderText="Code" InsertVisible="false" SortExpression="Code"></asp:BoundField>
<asp:BoundField ReadOnly="true" DataField="DeptName" HeaderText="DeparmentName" InsertVisible="false" SortExpression="Name"></asp:BoundField>
</Columns>
</asp:GridView>

Soft Corner · Answer

Hi Sandeep Solution for your code :- protected void chkSelectAll_CheckedChanged( object sender EventArgs e) { CheckBox chkbox = new CheckBox (); CheckBox chkbox1 = new CheckBox (); chkbox = ( CheckBox )gvApplicable.HeaderRow.FindControl( chkSelectAll ); foreach ( GridViewRow row in gvApplicable.Rows) { chkbox1 = ( CheckBox )row.FindControl( Chk1 ); if (chkbox.Checked == true ) { chkbox1.Checked = true ; } else { chkbox1.Checked = false ; } } }

Krishna Garad · Answer

write the method for checkbox selection three time for each gridview ;ike this private void CheckState1(bool p) { foreach (GridViewRow row in GridView1.Rows) { CheckBox chkcheck = (CheckBox)row.FindControl(chkcheck); chkcheck.Checked = p; } } private void CheckState2(bool p) { foreach (GridViewRow row in GridView2.Rows) { CheckBox chkcheck = (CheckBox)row.FindControl(chkcheck); chkcheck.Checked = p; } } private void CheckState3(bool p) { foreach (GridViewRow row in GridView3.Rows) { CheckBox chkcheck = (CheckBox)row.FindControl(chkcheck); chkcheck.Checked = p; } } and in selected index changed event of RadioButton if(RadiobuttonList.SelectedIndex==0) { CheckState1(true); CheckState2(false); ChechState3(false); } else if(RadiobuttonList.SelectedIndex==1) { CheckState1(false); CheckState2(true); ChechState3(false); } else if(RadiobuttonList.SelectedIndex==2) { CheckState1(false); CheckState2(false); ChechState3(true); } is it ok try this if not getting feel free to ask

sandeep kodepaka · Answer

Hi frnd thanx for the solution but i have one more problem i will expalin the scenario i have 3 radiobuttons and 3 griviews and one button to select all the checkboxes in the gridview.k if i select 1st radiobutton then iam able to select all the checkboxes in the gridview but if i iam selecting the second radiobutton then how to select all the checkboxes and if i select 3rd radiobutton then how to select the checkbox in the grid view can u please help me

Krishna Garad · Answer

Hi sandeep Write the bellow method and call it by passing the true/false on ur requirement in any event private void CheckState(bool p) { foreach (GridViewRow row in gdvdraftmails.Rows) { CheckBox chkcheck = (CheckBox)row.FindControl(chkcheck); chkcheck.Checked = p; } }