1

我有一个 RadGrid，它的行和列是以编程方式创建的，并且有一个 RadAjaxManager 设置为更新 SelectedIndexChange 上的另一个面板。RadGrid 还启用了滚动和禁用了多行选择。RadGrid 按预期运行，但只要您滚动它就会开始收集选定的项目。我已经设置了断点并通过手表验证 SelectedItems.Count 的增长大于 1。这也可以防止在滚动后选择先前选择的行。我曾尝试清除页面卸载事件中的选定项目，但是当它呈现时，有时会显示多个选定的项目。我说有时是因为它与这个问题不一致。我注意到的唯一模式是滚动会引发问题。

第二个问题是每次页面回发时，列标题都会消失。这让我很困惑，不知道是什么原因造成的。

我将不胜感激任何建议。我也会包括我的代码。谢谢，我为糟糕的格式道歉。我仍在试图弄清楚。

PS 我包含的代码设置为为列和行创建文本，因此不需要实际数据。您可以轻松复制并粘贴相同的代码以查看我所看到的内容。

<rad:RadScriptManager ID="scm" runat="server"> </rad:RadScriptManager>

<rad:RadAjaxManager ID="AjaxManager" runat="server">
<AjaxSettings>
<rad:AjaxSetting AjaxControlID="grdCustomerAssignments">
<UpdatedControls>
<rad:AjaxUpdatedControl ControlID="grdCustomerAssignments" LoadingPanelID="pnlLoading1" />
</UpdatedControls>
</rad:AjaxSetting>
<rad:AjaxSetting AjaxControlID="grdCustomerAssignments">
<UpdatedControls>
<rad:AjaxUpdatedControl ControlID="pnlDetails" />
</UpdatedControls>
</rad:AjaxSetting>
</AjaxSettings>
</rad:RadAjaxManager>

<rad:RadGrid ID="grdCustomerAssignments" runat="server" Skin="WebBlue" AutoGenerateColumns="false" AllowMultiRowSelection="false" OnNeedDataSource="grdCustomerAssignments_NeedDataSource" OnSelectedIndexChanged="grdCustomerAssignments_SelectedIndexChanged" OnSortCommand="grdCustomerAssignments_SortCommand">

<ClientSettings EnablePostBackOnRowClick="true" >
<ClientEvents/>
<Scrolling AllowScroll="true" ScrollHeight="350" UseStaticHeaders="true" SaveScrollPosition="true" />
<Selecting AllowRowSelect="true" />
<Resizing AllowColumnResize="true" />
</ClientSettings>

<MasterTableView DataKeyNames="ID" >

<HeaderStyle Wrap="false" HorizontalAlign="Center" VerticalAlign="Middle" Font-Bold="true" />
<ItemStyle HorizontalAlign="Center" VerticalAlign="Middle" Wrap="false" />
<AlternatingItemStyle HorizontalAlign="Center" VerticalAlign="Middle" Wrap="false" />

<NoRecordsTemplate>
<div style="font-size:80%; color:Maroon;">No Items Were Found</div>
</NoRecordsTemplate>

</MasterTableView>

</rad:RadGrid>

<asp:Panel ID="pnlDetails" runat="server">
<rad:RadTabStrip ID="tabStrip" runat="server" Align="Justify" AppendDataBoundItems="false" SelectedIndex="0" MultiPageID="multiPage" Skin="WebBlue">
<Tabs></Tabs>
</rad:RadTabStrip>
<rad:RadMultiPage ID="multiPage" runat="server"></rad:RadMultiPage>
</asp:Panel> 

protected DataTable Assignments { get; set; }  
protected Dictionary<string, IList<int>> TabTitles { get; set; }  


protected void Page_Init(object sender, EventArgs e)  
{  
  GetAssignments();  
  if (!IsPostBack)  
    AddColumnsToGrid();  
}  

protected void Page_Load(object sender, EventArgs e)  
{  
  tabStrip.Tabs.Clear();  
  multiPage.Controls.Clear();  
}  

protected void Page_UnLoad(object sender, EventArgs e)  
{  
  grdCustomerAssignments.MasterTableView.ClearSelectedItems();  
}  

protected void grdCustomerAssignments_NeedDataSource(object source, Telerik.Web.UI.GridNeedDataSourceEventArgs e)  
{  
  grdCustomerAssignments.DataSource = Assignments;  
}  

protected void grdCustomerAssignments_SelectedIndexChanged(object sender, EventArgs e)  
{  
  try  
  {  
     string id = ((RadGrid)sender).SelectedValue.ToString();  
     DataRow dataRow = null;  
     foreach (DataRow row in Assignments.Rows)  
     {  
       if (row["ID"].ToString() == id)  
         dataRow = row;  
     }  

     PopulateAssignmentDetail(dataRow);  

  }  
  catch (Exception ex)  
  {  

  }  
}  

protected void PopulateAssignmentDetail(DataRow datarow)  
{  
  // just some code to populate the tabs.  
}  

protected void AddColumnsToGrid()  
{  
   grdCustomerAssignments.MasterTableView.Columns.Clear();  

  for (int i = 1; i < 7; i++)  
  {  
     DataColumn column = Assignments.Columns[i];  
     GridBoundColumn boundColumn = new GridBoundColumn();  
     boundColumn.HeaderText = column.Caption;  
     boundColumn.DataField = column.ColumnName;  
     grdCustomerAssignments.MasterTableView.Columns.Add(boundColumn);  
  }  
}  

private void GetAssignments()  
{  
if (Assignments == null)  
Assignments = new DataTable();  
if (TabTitles == null)  
TabTitles = new Dictionary<string, IList<int>>();  
try  
{  
Assignments.Columns.Add(new DataColumn("ID"));  
for (int i = 0; i < 50; i++)  
{  
Assignments.Columns.Add(new DataColumn("Column" + i.ToString()));  
}  
int columnIndex = 0;  
int tabIndex = 0;  
foreach (DataColumn column in Assignments.Columns)  
{  
if (columnIndex > 5)  
{  
string fieldCategory = "tab" + tabIndex.ToString();  
if (tabIndex == 4)  
tabIndex = 0;  
else  
tabIndex++;  
if (!TabTitles.ContainsKey(fieldCategory))  
{  
IList<int> tmp = new List<int>();  
tmp.Add(columnIndex);  
TabTitles.Add(fieldCategory, tmp);  
}  
else  
TabTitles[fieldCategory].Add(columnIndex);  
}  
columnIndex++;  
}  
for (int j = 0; j < 50; j++)  
{  
DataRow row = Assignments.NewRow();  
foreach (DataColumn column in Assignments.Columns)  
{  
row[column.ColumnName] = column.ColumnName + "Row" + j.ToString();  
}  
Assignments.Rows.Add(row);  
}  
Assignments.AcceptChanges();  
Session["Assignments"] = Assignments;  
}  
catch (Exception ex)  
{  

}  
}
4

3 回答 3

2

检查您的代码后，我注意到您在 !Page.IsPostBack 时在 init 上生成了网格列。我从之前与 Telerik 的支持沟通中知道，当您在页面上有静态网格时，您应该在 !Page.IsPostBack 时在 PageLoad 上构建列 - 他们指示我进入帮助主题，在在线帮助中搜索它。

另外，如果我记得很清楚，我在发行说明中读到虚拟滚动和选定项目存在一些问题。它应该在最新的 Q3 2009 SP2 版本中得到修复。

迪克

于 2010-02-05T20:21:57.897 回答
0

这是一个按钮代码，此代码可以帮助您删除您在 RadGrid 中选择的复选框的多条记录。 

 protected void Button3_Click(object sender, EventArgs e)
            {
                Area_Master Area;
                int i;


            foreach (GridDataItem item in Grd_Area.Items)//loops through each grid row
            {
                CheckBox chkBx = (CheckBox)item.FindControl("chkArea");
                if (chkBx.Checked)
                {
                    i =  Convert.ToInt32(item.Cells[3].Text); //accessing cell using its ColumnUniqueName
                    var query = from obj in cnx.Area_Master where obj.PKAreaID == i select obj;
                    Area = query.FirstOrDefault();
                    cnx.DeleteObject(Area);
                    cnx.SaveChanges();
                }
            }

        }
于 2013-11-07T13:27:39.330 回答
0

（对不起，我帮不上忙，但是）您为什么不在Telerik 论坛上发帖或创建支持票？通常您会在 24 小时内得到答复。

于 2010-02-05T18:04:10.793 回答