MessageBoard.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 MessageBoard : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        if (Session["VipID"] != null) 
        {
            if (txtContent.Text == "" || txtTitle.Text == "") 
            {
                Page.RegisterStartupScript("", "<script>alert('请输入留言主题和内容！');</script>");
            }
            else 
            {
                try
                {
                    string connstr = ConfigurationManager.ConnectionStrings["SMDBConnectionString"].ConnectionString;
                    SqlConnection conn = new SqlConnection(connstr);
                    conn.Open();
                    SqlCommand cmd = new SqlCommand("Proc_InsertMessageInfo", conn);
                    cmd.CommandType = CommandType.StoredProcedure;
                    SqlParameter para1 = new SqlParameter("@VipID", SqlDbType.Int);
                    para1.Value = Session["VipID"].ToString();
                    cmd.Parameters.Add(para1);
                    SqlParameter para2 = new SqlParameter("@tz_Heading", txtTitle.Text);
                    cmd.Parameters.Add(para2);
                    SqlParameter para3 = new SqlParameter("@tz_Content", SqlDbType.NVarChar);
                    para3.Value = txtContent.Text;
                    cmd.Parameters.Add(para3);
                    SqlParameter para4 = new SqlParameter("@tz_Time", SqlDbType.DateTime);
                    para4.Value = DateTime.Now.ToShortDateString();
                    cmd.Parameters.Add(para4);
                    SqlParameter para5 = new SqlParameter("@flag", DbType.Int32);
                    para5.Direction = ParameterDirection.Output;
                    cmd.Parameters.Add(para5);
                    cmd.ExecuteNonQuery();
                    Page.RegisterStartupScript("", "<script>alert('发表成功！');</script>"); 
                    conn.Close();
                    GridView1.DataBind();
                }
                catch
                {
                }       
            }
        }
        else