how to get id of row from check box in gridview row

this is my gridview code  

<asp:GridView ID="dgAssociatedAttributes" runat="server" AutoGenerateColumns="False" BackColor="White" BorderColor="#999999" BorderStyle="None" BorderWidth="1px" CellPadding="3" GridLines="Vertical" Width="80%">

<FooterStyle BackColor="#CCCCCC" ForeColor="Black" />

<RowStyle BackColor="#EEEEEE" ForeColor="Black" />


          <asp:BoundField DataField="Name" HeaderText="Name" ItemStyle-Width="60%"/>

          <asp:TemplateField HeaderText="Is Required" ItemStyle-HorizontalAlign="Center" ItemStyle-Width="25%" >


                  <asp:CheckBox ID="chkIsRequired" runat="server" Checked='<%# Eval("IsRequired") %>' AutoPostBack="true"  OnCheckedChanged="IsRequired_Click" />



<asp:TemplateField ItemStyle-Width="39%">

     <ItemTemplate >

        <asp:LinkButton ID="lbDelete" runat="server" CausesValidation="false" CommandArgument='<%# Eval("AttributeId") %>' OnCommand="lbDelete_Click" >Delete</asp:LinkButton>




<PagerStyle BackColor="#999999" ForeColor="Black" HorizontalAlign="Center" />

<SelectedRowStyle BackColor="#008A8C" Font-Bold="True" ForeColor="White" />

<HeaderStyle BackColor="#000084" Font-Bold="True" ForeColor="White" />

<AlternatingRowStyle BackColor="#DCDCDC" />


i want that when i check or uncheck the checkbox it fire a event

protected void IsRequired_Click(object sender, EventArgs e)


productId =

CheckBox checkbox = sender as CheckBox;

if (checkbox != null)


GridViewRow row = checkbox.NamingContainer as GridViewRow;

int attributeId = 0;

if (row != null)


int.TryParse(dgAssociatedAttributes.DataKeys[row.RowIndex].ToString(), out attributeId);


if (checkbox.Checked)


db.updateIsRequired(productId, attributeId,




db.updateIsRequired(productId, attributeId,






in this code i simply insert the checked value in database through store procedure

but problem is that i am not able to get the value of "attributeid" . i thought in "EventArgs e" i will b able to get the value like i get it with

"e.CommandArgument" in delete button click event . but here "e" is returning null

now how can i get the value of attribute id (the id of row that checkbox is clicked).

plz help me out on this .thanks in advance


8/4/2008 12:18:01 PM 72751 articles. 3 followers. Follow

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You can easily retrieve the primary key of your data as you are currently doing, but no where in your GridView declaration do I see that you have the DataKeyNames property defined. You must first add the name of your primary key field to this property if you expect to receive a value out of it later.

Thanks, Ed

Microsoft MVP - ASP/ASP.NET

8/4/2008 12:27:39 PM

 Make the following changes.

1. Add an invisible label to that gridview itemtemplate


                  <asp:CheckBox ID="chkIsRequired" runat="server" Checked='<%# Eval("IsRequired") %>' AutoPostBack="true"  OnCheckedChanged="IsRequired_Click" />

                  <asp:Label ID="lblId" runat="server"  Visible="false" Text='<%# Bind("TableId")'   />


2. Now in checkbox changed event,

CheckBox chk = (CheckBox)sender;

GridViewRow gvRow = (GridViewRow)chk.NamingContainer;

Label lblId = (Label)gvRow.FindControl("lblId");

string tableid = lblId.Text;

I think you are programmer. understand the point and make in c#. Use Covnersion tools

Give a man a fish and you feed him for a day. Teach a man to fish and you feed him forever.
8/4/2008 12:35:30 PM

<script runat="server">
    String mac;                         // This is used to store the TableCell 'userid' within the Gridview
    //String hostName;                  // This is used to store the TableCell 'Host Name' within the Gridview
    String activity;                    // This is used to store the TableCell 'Activity within the Gridveiw
    String buildingNo;                  // This is used to store the TableCell 'Building# within the Gridveiw
    String description2;                // This is stored in the table 'user1' decription.
    String NASEuser;                    // This is used to store UserName to retrieve email form database
    String userEmail;                   // This is used to store the user's Email

    protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
        // This will assign the String variables their values pulling them from
        // the gridview.
 if (e.CommandName == "Update")
            int index = Convert.ToInt32(e.CommandArgument);
            GridViewRow selectedRow = GridView1.Rows[index];
            TableCell userid = selectedRow.Cells[1];
            mac = userid.Text;
            TableCell BuildingNo = selectedRow.Cells[2];
            buildingNo = BuildingNo.Text;
            //TableCell ComputerName = selectedRow.Cells[5];
            //hostName = ComputerName.Text;
            TableCell ActivityName = selectedRow.Cells[3];
            activity = ActivityName.Text;
            description2 = activity + " BLDG " + buildingNo;       //This is inserted into the description column
                                                                   //within the 'user1' table
            TableCell UserName = selectedRow.Cells[6];
            NASEuser = UserName.Text;

    protected void GridView1_RowUpdated(object sender, GridViewUpdatedEventArgs e)
        // First I have to read the table 'macreg' to verify that the 'SqlDataSourceGrid' inserted true or false
        // within the table 'macreg', column 'MACcomplete'.  If the checkbox within the gridview is checked, then
        // enabled will be true, else it will be false.
            String enabled;
            using (SqlConnection cn = new SqlConnection(ConfigurationManager.ConnectionStrings["cs"].ToString()))
                SqlCommand cmd = new SqlCommand("INSERT INTO [user1] ([userid], [passwd], [description]) VALUES (@userid, @passwd, @description)", cn);
                SqlCommand cmd2 = new SqlCommand("SELECT * FROM macreg WHERE userid ='" + mac + "'", cn);
                SqlDataReader rdr = cmd2.ExecuteReader();
                enabled = rdr["MACcomplete"].ToString();
                if (enabled == "True")
                    cmd.Parameters.Add("@userid", SqlDbType.VarChar, 50);
                    cmd.Parameters.Add("@passwd", SqlDbType.VarChar, 64);
                    cmd.Parameters.Add("@description", SqlDbType.NVarChar, 512);

                    cmd.Parameters["@userid"].Value = mac;
                    cmd.Parameters["@passwd"].Value = mac;
                    cmd.Parameters["@description"].Value = description2;
        catch (Exception err)
            ErrorMessageLabel.Text = "ERROR OCCURRED ";
            ErrorMessageLabel.Text += err.Message;



    <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataSourceID="SqlDataSourceGrid"
         CellPadding="4" DataKeyNames="userid" ForeColor="#3B3A60" GridLines="None" PageSize="25" Font-Names="Palatino Linotype"
         BorderColor="#504E6C" BorderStyle="Solid" BorderWidth="1px" HorizontalAlign="Center" Width="100%" OnRowUpdated="GridView1_RowUpdated" OnRowCommand="GridView1_RowCommand" Font-Size="Small" AllowPaging="True" AllowSorting="True">
        <FooterStyle BackColor="#2A203B" Font-Bold="True" ForeColor="White" BorderColor="#2A203B" BorderStyle="Solid" BorderWidth="10px" />
            <asp:CommandField ShowEditButton="True" EditText="Complete" >
                <ItemStyle ForeColor="#FF8000" />
            <asp:BoundField DataField="userid" HeaderText="MAC" ReadOnly="True" SortExpression="userid" />
            <asp:BoundField DataField="BuildingNo" HeaderText="Building" ReadOnly="True" SortExpression="BuildingNo" >
                <ItemStyle HorizontalAlign="Center" />
            <asp:BoundField DataField="ActivityName" HeaderText="Activity" ReadOnly="True" SortExpression="ActivityName" >
                <ItemStyle HorizontalAlign="Center" />
            <asp:BoundField DataField="Device" HeaderText="Device" ReadOnly="True" SortExpression="Device" visible="False" />
            <asp:BoundField DataField="ComputerName" HeaderText="ComputerName" ReadOnly="True"
                SortExpression="ComputerName" >
                <ItemStyle HorizontalAlign="Center" />
            <asp:BoundField DataField="UserName" HeaderText="User" ReadOnly="True" SortExpression="UserName" />
            <asp:BoundField DataField="DateRequested" HeaderText="Date Requested" SortExpression="DateRequested" DataFormatString="{0:g}" ReadOnly="True" />
            <asp:CheckBoxField DataField="MACcomplete" HeaderText="Completed" SortExpression="MACcomplete" />
        <SelectedRowStyle BackColor="#FFE0C0" ForeColor="#2A203B" Font-Bold="True" BorderColor="#2A203B" BorderStyle="Solid" BorderWidth="10px" Font-Size="Small" />
        <PagerStyle ForeColor="White" HorizontalAlign="Center" BorderColor="#2A203B" BorderStyle="Solid" BorderWidth="10px" />
        <HeaderStyle BackColor="#2A203B" Font-Bold="True" ForeColor="White" BorderColor="#2A203B" BorderStyle="Solid" BorderWidth="1px" HorizontalAlign="Center" />
        <AlternatingRowStyle BackColor="#EDEDED" ForeColor="#2A203B" BorderColor="#2A203B" BorderStyle="Solid" BorderWidth="10px" />
        <RowStyle BackColor="White" ForeColor="#2A203B" BorderColor="#2A203B" BorderStyle="Solid" BorderWidth="10px" />
        <EditRowStyle BorderStyle="Solid" BorderWidth="10px" HorizontalAlign="Center" Font-Bold="True" Font-Overline="False" Font-Size="Small" Font-Underline="True" />
        <EmptyDataRowStyle BorderColor="#2A203B" BorderStyle="Solid" BorderWidth="10px" HorizontalAlign="Center" />       
            <font color="red">No Open Work Orders</font>

    <asp:SqlDataSource ID="SqlDataSourceGrid" runat="server" ConnectionString="<%$ ConnectionStrings:SBRcs %>"
        SelectCommand="SELECT userid, BuildingNo, ActivityName, Device, ComputerName, SUBSTRING(UserName, 6, 20) AS UserName, MACcomplete, DateRequested FROM macreg WHERE (MACcomplete = @MACcomplete)"
        UpdateCommand="UPDATE macreg SET MACcomplete = @MACcomplete ,DateCompleted = getdate() WHERE (userid = @userid )">
            <asp:Parameter DefaultValue="False" Name="MACcomplete" Type="Boolean" />
            <asp:Parameter Name="MACcomplete" />
            <asp:Parameter Name="userid" />

~~ Believe in Science, not religion. Science will always progress, religions will always collapse. ~~
8/4/2008 12:42:12 PM

You can try this way.

fire a JavaScript function OnClick event of the checkBox.  (eg: OnClick = "test(this);")

and in that function u wil b able to write like this.

function test(obj)


document.getElementById('HiddenField').value = obj.parentElement.parentElement.children[3].children[1].children[0].innerText;


you can place a debugger and check for the exact value in trial and error method.



~ Muppidi
8/4/2008 12:45:26 PM

If the DataKeys aren't being defined for whatever reason, Why not just add an attribute to the checkbox itself?


                  <asp:CheckBox ID="chkIsRequired" runat="server" Checked='<%# Eval("IsRequired") %>' MyKey='<%# Eval("IsRequired") %>AutoPostBack="true"  OnCheckedChanged="IsRequired_Click" />



Then, in code, you could reference:

chk = e.FindControl("chkIsRequired")

 myVal =  chk.Attributes["MyKey"].ToString();


I've left out a lot of code, but hopefully it is clear what I am saying.

8/4/2008 1:06:14 PM

ecbruck i did define as u said but still i was not able to get the required id

and thanks every one for sharing there code and try to help me but they are more complex for my knowledge i tried the ramireddyindia way and it did work .


8/5/2008 4:56:06 AM

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