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)
{
}
}