i want to show a popup when if data is inserted in sql database, and data not insert in database then popup not shown.
protected void btnupdate_Click(object sender, EventArgs e)
{
string sql, sqll;
sql = "UPDATE tbl_signup SET firstname='" + txtfirst.Text + "',";
sql = sql + " lastname='" + txtlast.Text + "',";
sql = sql + " email='" + txtemail.Text + "',";
sql = sql + " dob='" + txtdob.Text + "',";
sql = sql + " company='" + txtcompany.Text + "',";
sql = sql + " country='" + txtcountry.Text + "',";
sql = sql + " website='" + txtweb.Text + "',";
sql = sql + " pincode='" + txtpincode.Text + "', ...
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