pbm in gridview delete button

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i have a button on a gridview for delete, i want wen i click the button ,the current row is deleted .so plz help wat ll i do...

Posted 11-Mar-12 20:25pm

shiva30

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ythisbug · Answer 1 · 2012-03-11T20:36:00

Design Your asp like this

XML

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>ConfirmBox in Gridview Row Delete</title>
<style type="text/css">
.Gridview
{
font-family:Verdana;
font-size:10pt;
font-weight:normal;
color:black;

}
</style>
<script type="text/javascript">
function ConfirmationBox(username) {

var result = confirm('Are you sure you want to delete '+username+' Details' );
if (result) {

return true;
}
else {
return false;
}
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView runat="server" ID="gvrecords" CssClass="Gridview"
DataKeyNames="UserId" AutoGenerateColumns="false"
HeaderStyle-BackColor="#7779AF" HeaderStyle-ForeColor="White"
onrowdatabound="gvrecords_RowDataBound">
<Columns>
<asp:BoundField DataField="UserName" HeaderText="UserName" />
<asp:BoundField DataField="FirstName" HeaderText="FirstName" />
<asp:BoundField DataField="LastName" HeaderText="LastName" />
<asp:TemplateField HeaderText="Delete User Details">
<ItemTemplate>
<asp:LinkButton ID="lnkdelete" runat="server" OnClick="lnkdelete_Click">Delete User</asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</div>
</form>
</body>
</html>

then write this code in aspx.cs

SqlConnection con = new SqlConnection("Data Source=SureshDasari;Integrated Security=true;Initial Catalog=MySampleDB");
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindUserDetails();
}
}
protected void BindUserDetails()
{
//connection open
con.Open();
//sql command to execute query from database
SqlCommand cmd = new SqlCommand("Select * from UserDetails",con);
cmd.ExecuteNonQuery();
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
//Binding data to gridview
gvrecords.DataSource = ds;
gvrecords.DataBind();
con.Close();
}
protected void gvrecords_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
//getting username from particular row
string username =Convert.ToString(DataBinder.Eval(e.Row.DataItem,"UserName"));
//identifying the control in gridview
LinkButton lnkbtnresult = (LinkButton)e.Row.FindControl("lnkdelete");
//raising javascript confirmationbox whenver user clicks on link button
lnkbtnresult.Attributes.Add("onclick", "javascript:return ConfirmationBox('" + username+ "')");
}
}
protected void lnkdelete_Click(object sender, EventArgs e)
{

LinkButton lnkbtn= sender as LinkButton;
//getting particular row linkbutton
GridViewRow gvrow = lnkbtn.NamingContainer as GridViewRow;
//getting userid of particular row
int userid = Convert.ToInt32(gvrecords.DataKeys[gvrow.RowIndex].Value.ToString());
string username = gvrow.Cells[0].Text;
con.Open();
SqlCommand cmd = new SqlCommand("delete from UserDetails where UserId="+userid,con);
int result=cmd.ExecuteNonQuery();
con.Close();
if (result == 1)
{
BindUserDetails();
//Displaying alert message after successfully deletion of user
ScriptManager.RegisterStartupScript(this, this.GetType(), "alertmessage", "javascript:alert('" + username + " details deleted successfully')", true);
}
}

Neha Thanka · Answer 2 · 2012-03-11T20:46:00

Solution 2

Hi,

Take the properties of the Sql data source. Then specify the delete query in that. Then goto your gridview. In the gridview tasks check enable deleting.

Using this method you can delete a specific row without adding a separate button for delete.

Posted 11-Mar-12 20:46pm

Neha Thanka