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C# code:
protected void Button1_Click(object sender, EventArgs e)
{
string strupdate = "update S set SN = '" + txt_SN.Text + "',SD = '" + txt_SD.Text + "',SA = '" + txt_SA.Text + "' where S#='" + Request.QueryString["SNO"] + "'";
CC.ExecSQL(strupdate);
Response.Redirect("Student.aspx");
}
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