How to delete the records from gridview using checkboxes

Steps to delete multiple records from gridview
http://www.dotnetfunda.com/articles/article1646-how-to-delete-multiple-selected-records-from-the-gridview.aspx[^]
http://technico.qnownow.com/2012/04/06/add-checkboxes-to-asp-net-gridview-control/[^]

Add Grid View Like this

<asp:GridView ID="GVID">
 <Columns>
<asp:TemplateField HeaderText="Select">
                                                                                                   <ItemTemplate>
                                                                                                       <asp:CheckBox ID="QchkBxSelect" runat="server" />
                                                                                                   </ItemTemplate>
                                                                                                   <HeaderTemplate>
                                                                                                       <asp:CheckBox ID="QchkBxHeader" onclick="javascript:QHeaderClick(this);" runat="server" />
                                                                                                   </HeaderTemplate>
                                                                                               </asp:TemplateField>
<asp:TemplateField HeaderText="Risk ID" meta:resourcekey="asptempriskid">
                                                                                                   <ItemTemplate>
                                                                                                       <asp:Label ID="lbluniqueId" Text='<%# Eval("uniqueID") %>' runat="server"></asp:Label>
                                                                                                   </ItemTemplate>
                                                                                               </asp:TemplateField>

</Columns>
                                                                                                                   </asp:GridView>

Call The Java Script to Select DeSelect Checkbox

<script type="text/javascript">
var QTotalChkBx;
        var QCounter;


        window.onload = function () {
            //Get total no. of CheckBoxes in side the GridView.

            QTotalChkBx = parseInt('<%= this.GVID.Rows.Count %>');

            //Get total no. of checked CheckBoxes in side the GridView.

            QCounter = 0;
        }
function QHeaderClick(QCheckBox) {
            //Get target base & child control.
            var QTargetBaseControl =
       document.getElementById('<%= this.GVID.ClientID %>');
            var QTargetChildControl = "QchkBxSelect";

            //Get all the control of the type INPUT in the base control.
            var QInputs = QTargetBaseControl.getElementsByTagName("input");

            //Checked/Unchecked all the checkBoxes in side the GridView.
            for (var n = 0; n < QInputs.length; ++n)
                if (QInputs[n].type == 'checkbox' &&
                QInputs[n].id.indexOf(QTargetChildControl, 0) >= 0)
                    QInputs[n].checked = QCheckBox.checked;

            //Reset Counter
            QCounter = QCheckBox.checked ? QTotalChkBx : 0;
        }

        function QChildClick(QCheckBox, QHCheckBox) {
            //get target control.
            var QHeaderCheckBox = document.getElementById(QHCheckBox);

            //Modifiy Counter;
            if (QCheckBox.checked && QCounter < QTotalChkBx)
                QCounter++;
            else if (QCounter > 0)
                QCounter--;

            //Change state of the header CheckBox.
            if (QCounter < QTotalChkBx)
                QHeaderCheckBox.checked = false;
            else if (QCounter == QTotalChkBx)
                QHeaderCheckBox.checked = true;
        }


    </script>

add Asp Button Outside Grid View Like this

<asp:Button ID="Delete" runat="server" Text="Delete "
                                                                                            OnClick="Delete_Click" />

Try this below Code In Delete Button onClick Event

string flagchecked = "0";
ArrayList arrrid = new ArrayList();
// Select the checkboxes from the GridView control
for (int i = 0; i < GVID.Rows.Count; i++)
{
GridViewRow row = GVID.Rows[i];
bool isChecked = ((CheckBox)row.FindControl("chkBxSelect")).Checked;

if (isChecked)
{
flagchecked = "1";
string uniqueid= ((Label)row.FindControl("lblitemuniqueId")).Text;
arrrid.Add(uniqueid);
}
}
if (flagchecked == "1")
{
for (int jR = 0; jR < arrrid.Count; jR++)
{
//Delete Operation

}
}

Check below link

How to delete the records from gridview using checkboxes[^]