Question

我动态创建了一个gridview，现在我想在selectedindex发生变化时触发一个事件。

 GridView NewDg = new GridView();
 NewDg.ID = "SubGridView" + e.Row.RowIndex.ToString();
 NewDg.DataKeyNames = new string[]{"logentry_id"};
 NewDg.SelectedIndexChanged += new EventHandler(NewDg_SelectedIndexChanged);
 NewDg.RowDataBound += new GridViewRowEventHandler(NewDg_RowDataBound);

RowDataBound有效，但我猜它不会产生正确的回发网址。在RowDataBound中，我有以下代码：

GridView sendingGridView = (GridView)sender;
e.Row.Attributes["onclick"] = ClientScript.GetPostBackClientHyperlink(sendingGridView, "Select$" + e.Row.RowIndex);

这会产生以下代码：

javascript:__doPostBack('SubGridView4','Select$0')

只有这不会导致回复此功能：

        void NewDg_SelectedIndexChanged(object sender, EventArgs e)
    {

        GridView sendingGridView = (GridView)sender;
        ViewDetails(Convert.ToInt32(sendingGridView.SelectedDataKey["logentry_id"].ToString()));
    }

有谁知道我做错了什么？

Answer 1

首先，您是在每次加载页面时重新创建网格吗？这是以这种方式创建网格的要求。其次，尝试点击RowCommand，然后寻找命令名称;也许这会成功解雇;您可以通过命令参数获得对命令的引用，如下所示：

void rowcmd(..) {
   if (e.CommandName != null && e.CommandName.StartsWith("Select")) {
       //Dothis
   }
}

Answer 2

我在Code Project上找到了我的问题的答案：

我现在在gridview中使用gridview

            <asp:TemplateField>
            <ItemTemplate>
                <asp:GridView ID="SubGridView"

由于GridView上的扩展器，当我点击加号时会显示gridview（参见链接）

在页面加载时执行以下操作：

        protected void Page_Load(object sender, EventArgs e)
    {
        GridView1.RowCreated += new GridViewRowEventHandler(GridView1_RowCreated);
        GridView1.DataSource = dc.GetLogEntriesWithUsername();
        GridView1.DataBind();

我已经在此gridview上有一个DataBound和一个Selected Index Changed事件。

在行创建的事件中，我执行以下操作：

        void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            GridView SubGridView = e.Row.FindControl("SubGridView") as GridView;
            List<GetLogEntriesWithUsernameByParentIdResult> subLogEntries = dc.GetLogEntriesWithUsernameByParentId(((GetLogEntriesWithUsernameResult)e.Row.DataItem).logentry_id).ToList();
            if (subLogEntries.Count > 0)
            {
                SubGridView.DataSource = subLogEntries;
                SubGridView.DataBind();
                (e.Row as ExtGridViewRow).ShowExpand = SubGridView.Rows.Count > 0;
            }
        }
    }

在subgridview上，我还有一个DataBound和一个SelectedIndex Changed事件。现在可以了！

我使用此DataBound事件：

        protected void GridView_RowDataBound(object sender, GridViewRowEventArgs e)
    {        // only apply changes if its DataRow
        GridView sendingGridView = (GridView)sender;
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            // when mouse is over the row, save original color to new attribute, and change it to highlight yellow color
            e.Row.Attributes.Add("onmouseover",
          "this.originalstyle=this.style.backgroundColor;this.style.backgroundColor='#C0C0C0';this.style.cursor='pointer';");

            // when mouse leaves the row, change the bg color to its original value   
            e.Row.Attributes.Add("onmouseout",
            "this.style.backgroundColor=this.originalstyle;this.style.cursor='cursor'");
            //e.Row.Attributes.Add("onclick", ClientScript.GetPostBackClientHyperlink(sendingGridView, "Select$" + e.Row.RowIndex));

            e.Row.Cells[1].Attributes["onclick"] = ClientScript.GetPostBackClientHyperlink(sendingGridView, "Select$" + e.Row.RowIndex);
            e.Row.Cells[2].Attributes["onclick"] = ClientScript.GetPostBackClientHyperlink(sendingGridView, "Select$" + e.Row.RowIndex);
            e.Row.Cells[3].Attributes["onclick"] = ClientScript.GetPostBackClientHyperlink(sendingGridView, "Select$" + e.Row.RowIndex);
            e.Row.Cells[4].Attributes["onclick"] = ClientScript.GetPostBackClientHyperlink(sendingGridView, "Select$" + e.Row.RowIndex);
            e.Row.Cells[5].Attributes["onclick"] = ClientScript.GetPostBackClientHyperlink(sendingGridView, "Select$" + e.Row.RowIndex);

所选索引改变了事件：

        protected void GridView_SelectedIndexChanged(object sender, EventArgs e)
    {
        GridView sendingGridView = (GridView)sender;
        ViewDetails(Convert.ToInt32(sendingGridView.SelectedDataKey["logentry_id"].ToString()));         
    }

ViewDetails函数在不同的div中显示所选择的logentry的详细信息。现在我正忙着做最后一步，那就是在点击一行之前继续显示数据。

感谢您的帮助，但这是解决我问题的方法。

selectedindexchanged在动态创建的gridview上

2 个答案: