asp.net企业意见管理系统源码(含数据库)

企业意见管理系统，入门级示例源码，适合新手

 protected void btnOK1_Click(object sender, EventArgs e)
    {
        SqlData da = new SqlData();
        SqlDataReader read = da.ExceRead("select * from tb_User where Uid='" this.txtUid.Text "'");
        read.Read();
        if (read.HasRows)
        {
            if (this.txtUid.Text == read["Uid"].ToString())//判断是否存在相同用户
            {
                Response.Write("<script language=javascript>alert('对不起，该用户已经注册！');location='Register.aspx'</script>");
                return;
            }
        }
        read.Close();  
        string cmdtxt = "INSERT INTO tb_User(Uid,Pwd,Sex,WebSite,Email,QQ,IP)";//添加用户信息
        cmdtxt = " VALUES('" this.txtUid.Text "','" this.txtPwd.Text "','" this.radSex.SelectedValue "'";
        cmdtxt = ",'" this.txtWebSite.Text "','" this.txtEmail.Text "','" this.txtQQ.Text "'";
        cmdtxt = ",'" Request.UserHostAddress "')";
        bool add = da.ExceSQL(cmdtxt);
        if (add == true)