Hi All,
I try to make unlimited hierarchical radgrid with SelfHierarchySettings. But when i try to expand a node i can not see the child level inside "No child records to display." I don't want to use HierarchyLoadMode ="Client" so can any body check and inform me what's the problem with my code
Regards ..
I try to make unlimited hierarchical radgrid with SelfHierarchySettings. But when i try to expand a node i can not see the child level inside "No child records to display." I don't want to use HierarchyLoadMode ="Client" so can any body check and inform me what's the problem with my code
Regards ..
<body> |
<form id="form1" runat="server"> |
<asp:ScriptManager ID="sm" runat="server" /> |
<telerik:RadGrid ID="RadGrid1" runat="server" AutoGenerateColumns="false" OnColumnCreated="RadGrid1_ColumnCreated" |
OnItemCreated="RadGrid1_ItemCreated" OnItemDataBound="RadGrid1_ItemDataBound" |
OnDetailTableDataBind="RadGrid1_DetailTableDataBind"> |
<MasterTableView AllowSorting="true" DataKeyNames="FullPath,ParentPath,IsFolder" |
Width="100%" > |
<SelfHierarchySettings ParentKeyName="FullPath" KeyName="ParentPath" /> |
</MasterTableView> |
<ClientSettings AllowExpandCollapse="true" /> |
</telerik:RadGrid> |
</form> |
</body> |
public partial class test2 : System.Web.UI.Page |
{ |
protected void Page_Load(object sender, EventArgs e) |
{ |
if (!Page.IsPostBack) |
{ |
GridBoundColumn col = new GridBoundColumn(); |
col.HeaderText = "FullPath"; |
col.DataField = "FullPath"; |
RadGrid1.Columns.Add(col); |
col = new GridBoundColumn(); |
col.HeaderText = "ParentPath"; |
col.DataField = "ParentPath"; |
RadGrid1.Columns.Add(col); |
RadGrid1.DataSource = GetData("/"); |
} |
} |
private DataTable GetData(string ParentPath) |
{ |
DataTable dt = new DataTable(); |
dt.Columns.Add(new DataColumn("FullPath")); |
dt.Columns.Add(new DataColumn("ParentPath")); |
dt.Columns.Add(new DataColumn("IsFolder", typeof(bool))); |
DataRow dr; |
for (int i = 0; i < 3; i++) |
{ |
dr = dt.NewRow(); |
dr[0] = ParentPath + "Folder" + i; |
dr[1] = ParentPath; |
dr[2] = true; |
dt.Rows.Add(dr); |
} |
for (int i = 0; i < 2; i++) |
{ |
dr = dt.NewRow(); |
dr[0] = ParentPath + "File" + i.ToString() + ".txt"; |
dr[1] = ParentPath; |
dr[2] = false; |
dt.Rows.Add(dr); |
} |
return dt; |
} |
protected void RadGrid1_ColumnCreated(object sender, GridColumnCreatedEventArgs e) |
{ |
if (e.Column is GridExpandColumn) |
{ |
e.Column.Visible = false; |
} |
else if (e.Column is GridBoundColumn) |
{ |
e.Column.HeaderStyle.Width = Unit.Pixel(100); |
} |
} |
public void Page_PreRenderComplete(object sender, EventArgs e) |
{ |
HideExpandColumnRecursive(RadGrid1.MasterTableView); |
} |
public void HideExpandColumnRecursive(GridTableView tableView) |
{ |
GridItem[] nestedViewItems = tableView.GetItems(GridItemType.NestedView); |
foreach (GridNestedViewItem nestedViewItem in nestedViewItems) |
{ |
foreach (GridTableView nestedView in nestedViewItem.NestedTableViews) |
{ |
nestedView.Style["border"] = "0"; |
Button MyExpandCollapseButton = (Button)nestedView.ParentItem.FindControl("MyExpandCollapseButton"); |
if (nestedView.ParentItem.GetDataKeyValue("IsFolder").ToString() == "False") |
{ |
if (MyExpandCollapseButton != null) |
{ |
MyExpandCollapseButton.Style["visibility"] = "hidden"; |
} |
nestedViewItem.Visible = false; |
} |
else |
{ |
if (MyExpandCollapseButton != null) |
{ |
MyExpandCollapseButton.Style.Remove("visibility"); |
} |
} |
if (nestedView.HasDetailTables) |
{ |
HideExpandColumnRecursive(nestedView); |
} |
} |
} |
} |
protected void RadGrid1_ItemCreated(object sender, GridItemEventArgs e) |
{ |
CreateExpandCollapseButton(e.Item, "FullPath"); |
if (e.Item is GridHeaderItem && e.Item.OwnerTableView != RadGrid1.MasterTableView) |
{ |
e.Item.Style["display"] = "none"; |
} |
if (e.Item is GridNestedViewItem) |
{ |
e.Item.Cells[0].Visible = false; |
} |
} |
protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e) |
{ |
CreateExpandCollapseButton(e.Item, "FullPath"); |
} |
public void CreateExpandCollapseButton(GridItem item, string columnUniqueName) |
{ |
if (item is GridDataItem) |
{ |
if (item.FindControl("MyExpandCollapseButton") == null) |
{ |
Button button = new Button(); |
button.Click += new EventHandler(button_Click); |
button.CommandName = "ExpandCollapse"; |
button.CssClass = (item.Expanded) ? "rgCollapse" : "rgExpand"; |
button.ID = "MyExpandCollapseButton"; |
if (item.OwnerTableView.HierarchyLoadMode == GridChildLoadMode.Client) |
{ |
string script = String.Format(@"$find(""{0}"")._toggleExpand(this, event); return false;", item.Parent.Parent.ClientID); |
button.OnClientClick = script; |
} |
int level = item.ItemIndexHierarchical.Split(':').Length; |
if (level > 1) |
button.Style["margin-left"] = level + 10 + "px"; |
TableCell cell = ((GridDataItem)item)[columnUniqueName]; |
cell.Controls.Add(button); |
cell.Controls.Add(new LiteralControl(" ")); |
cell.Controls.Add(new LiteralControl(((GridDataItem)item).GetDataKeyValue(columnUniqueName).ToString())); |
} |
} |
} |
void button_Click(object sender, EventArgs e) |
{ |
((Button)sender).CssClass = (((Button)sender).CssClass == "rgExpand") ? "rgCollapse" : "rgExpand"; |
} |
protected void RadGrid1_DetailTableDataBind(Object source, GridDetailTableDataBindEventArgs e) |
{ |
GridDataItem dataItem = (GridDataItem)e.DetailTableView.ParentItem; |
if (dataItem.GetDataKeyValue("IsFolder").ToString() == "True") |
{ |
e.DetailTableView.DataSource = GetData(dataItem.GetDataKeyValue("FullPath").ToString()); |
} |
} |
} |