I bound gridview with databse..property Checkbox -true .
I have three columns roll,name ,roll.

I want that on button_click, roll nos are displayed whose checkboxes are checked in gridview--
SOURCE TAB

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False">   
                  
   <Columns>      
                 
 <asp:TemplateField >  

    <ItemTemplate >     
              
     <asp:CheckBox ID ="chk" runat ="server"  />       
  
               </ItemTemplate>    
            
        </asp:TemplateField>     
        
   <asp:BoundField HeaderText="Roll" DataField ="roll" />            
            
   <asp:BoundField HeaderText="Name"  DataField ="name"/>                       

 <asp:BoundField HeaderText="Marks" DataField ="marks"/>             

           </Columns>    
              
  </asp:GridView>

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"> 

<Columns> 

<asp:TemplateField > 

<ItemTemplate >

 <asp:CheckBox ID ="chk" runat ="server" /> 

</ItemTemplate>

 </asp:TemplateField> 

<asp:BoundField HeaderText="Roll" DataField ="roll" /> 

<asp:BoundField HeaderText="Name" DataField ="name"/> 

<asp:BoundField HeaderText="Marks" DataField ="marks"/> 

</Columns>

 </asp:GridView>
public partial class Default3 : System.Web.UI.Page
{
string query;
SqlConnection conn = new SqlConnection("Data Source=SQLEXPRESS;Initial catalog=mansi;Integrated Security=true");
SqlCommand cmd;
protected void Page_Load(object sender, EventArgs e)
{
query = "Select * from Information";
conn.Open();
cmd = new SqlCommand(query, conn);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds=new DataSet ();
da.Fill (ds );
GridView1.DataSource = ds;
GridView1.DataBind();
conn.Close();
}


protected void Button1_Click(object sender, EventArgs e)
{
bool bchecked;

for (int i = 0; i < this.GridView1.Rows.Count; i++)
{
bchecked = ((CheckBox)GridView1.Rows[i].FindControl("chk")).Checked;

}
}
}

Suppose i have three rows in Gridview & I Uncheck first & third checkboxes,& check the second checkbox,
But everytime in varable bchecked false is coming...y so???Plz help me out..

Hi
The code mentioned in PageLoad.. gets repeated for every postback,
try this way...

protected void Page_Load(object sender, EventArgs e)
{
if(!IsPostback)
{
query = "Select * from Information";
conn.Open();
cmd = new SqlCommand(query, conn);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds=new DataSet ();
da.Fill (ds );
GridView1.DataSource = ds;
GridView1.DataBind();
conn.Close();
}
}

hi frnd, Now i got the checboxes status,But now I want to get the cell value of second column whose corresponding checkboxes are checked.

On Net,I found but its not working....Help me out...

protected void Button1_Click(object sender, EventArgs e)
    {
        string sName;
        bool bchecked;

        for (int i = 0; i < this.GridView1.Rows.Count; i++)
        {
            bchecked = ((CheckBox)GridView1.Rows[i].FindControl("chk")).Checked;
            if (bchecked == true)
            {
                Label lblName = (Label)GridView1.FindControl("Name") ;
                sName = lblName.ToString ;
               
            }

           
        }
        

    }

SOURCE TAB

<asp:BoundField HeaderText="Roll" DataField ="roll" />
            <asp:BoundField HeaderText="Name"  DataField ="name"/>
       <asp:BoundField HeaderText="Marks" DataField ="marks"/>

Hi,

For the Control Values.. U need to convert your Bound Controls to TemplateFields. chk this

<asp:TemplateField HeaderText="Name">
<ItemTemplate>
<asp:Label runat="server" ID="Name" Text='<%# Bind("name") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>

then you can FindControl these values.. in your .cs file

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