Manage/msg.aspx.cs

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using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
public partial class Manage_msg : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        string id = Request.QueryString["id"];
        SqlConnection con = DB.getcon();
        SqlCommand cmd = new SqlCommand("select*from Messages where MsgID='"+id+"'",con);
        con.Open();
        SqlDataReader dr = cmd.ExecuteReader();
        if (dr.Read())
        {this.TextBox1.Text=dr["Msgcontent"].ToString();
        }
        dr.Close();
        con.Close();
    }

    protected void Button1_Click(object sender, EventArgs e)
    {
        Response.Redirect("ManageMsg.aspx");
    }
}