Question

这是我的项目我有一个列表视图。显示文章的评论或手写。我有两个sqldatasource，第2个（文章）和3个（手写）。我想在页面加载时更改数据源ID并显示其他注释。默认listview datasourceid是sqldatasource2并且它可以工作，但是当将sqldatasource2更改为sqldatasource3时它们不起作用。这是sqldatasource2的选择命令

       <asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$
       ConnectionStrings:myconnection_sql %>" SelectCommand="SELECT [name], [date], [text]
        FROM [comment] WHERE ([idarticle] = @idarticle)">

这是sqldatasource3的选择命令

       <asp:SqlDataSource ID="SqlDataSource3" runat="server" ConnectionString="<%$
       ConnectionStrings:myconnection_sql %>" SelectCommand="SELECT [name], [date], [text]
        FROM [comment] WHERE ([idhandwritten] = @idarticle)">

这是page_load代码：

      protected void Page_Load(object sender, EventArgs e)
       {


        try
        {

            int id = Convert.ToInt32(Request.QueryString.Get("id"));



            SqlConnection con = new  
                 SqlConnection(ConfigurationManager.ConnectionStrings
            ["myconnection_sql"].ConnectionString);
            SqlCommand cmd = new SqlCommand("select type from article_handwritten where
            id=@id");
            cmd.Parameters.Add("@id", SqlDbType.Int).Value = id;
            SqlDataAdapter da = new SqlDataAdapter();
            DataTable dt = new DataTable();
            cmd.Connection = con;
            con.Open();
            cmd.ExecuteNonQuery();
            da.SelectCommand = cmd;
            da.Fill(dt);
            string type = dt.Rows[0]["type"].ToString();
            if (type == "Article")
            {
                ListView1.DataSourceID = "SqlDataSource2";
                ListView1.DataBind();

            }
            else if (type == "handwritten")
            {
                ListView1.DataSourceID = "SqlDataSource3";
                ListView1.DataBind();
            }

            con.Close();
        }
        catch
        {

        }

页面加载时更改ListView DataSourceID？

0 个答案: