Pass all of the selected items' paths to the server

HOW-TO

Pass all of the selected items' paths to the server by clicking a button.

SOLUTION

1. Add the needed contols on the page

   • a Button that triggers the post back (ID="Button1")

   • a HiddenField that holds the selected items paths (ID=HiddenField1")

   • a Label - used for demonstration purposes to show the selected item's count. Its Text property is set on the server.

2. Attach a handler (sendItemsPathsToServer) to the OnClientClick event of the Button1. This function accepts a parameter - the button object.

3. The handler :

ASP.NET

<script>
function sendItemsPathsToServer(clickedButton)  
{  
    var oExplorer = $find("<%= RadFileExplorer1.ClientID %>"); // Find the Explorer ;  
    var selectedItems = oExplorer.get_selectedItems(); // Retrieve the selected items ;  
    var selectedItemsPaths = combinePathsInAString(selectedItems); // Get the paths as a string in specific format ;  
 
    var hiddenField = $get("<%= HiddenField1.ClientID %>"); // Find the hiddenField  
    hiddenField.value = selectedItemsPaths;  
    __doPostBack(clickedButton.name, ""); // Call the 'Button1_Click' function on the server ;  
} 
</script>

4. The combinePathsInAString function accepts an array of type Telerik.Web.UI.FileExplorerItem - the selected items, and returns a string that contains all of the items paths:

ASP.NET

       <telerik:radfileexplorer id="RadFileExplorer1" runat="server" height="300px" width="804px">
           <Configuration UploadPaths="~/Northwind/" DeletePaths="~/Northwind/" ViewPaths="~/Northwind/"></Configuration>
       </telerik:radfileexplorer>
       <asp:HiddenField ID="HiddenField1" runat="server" />
       <asp:Label ID="Label1" runat="server"></asp:Label>
       <asp:Button ID="Button1" runat="server" Text="Send selected FileExplorers' items"
           OnClientClick="sendItemsPathsToServer(this); return false;" OnClick="Button1_Click" />
       <telerik:radcodeblock id="RadCodeBlock1" runat="server">

           <script type="text/javascript">
               function combinePathsInAString(arrayOfSelectedItems)
               {
                   var itemPaths = new Array();
                   for (var i = 0; i < arrayOfSelectedItems.length; i++)
                   {
                       // Pass all the selected paths ;
                       itemPaths.push(arrayOfSelectedItems[i].get_path());
                   }

                   // Return a string that contains the paths ;
                   return itemPaths.join("{}");
               }

               function sendItemsPathsToServer(clickedButton)
               {
                   var oExplorer = $find("<%= RadFileExplorer1.ClientID %>"); // Find the Explorer ;
                   var selectedItems = oExplorer.get_selectedItems(); // Retrieve the selected items ;
                   var selectedItemsPaths = combinePathsInAString(selectedItems); // Get the paths as a string in specific format ;

                   var hiddenField = $get("<%= HiddenField1.ClientID %>"); // Find the hiddenField
                   hiddenField.value = selectedItemsPaths;
                   __doPostBack(clickedButton.name, ""); // Call the 'Button1_Click' function on the server ;
               }
               
           </script>

       </telerik:radcodeblock>

C#

protected void Button1_Click(object sender, EventArgs e)  
{  
    string serializedItems = HiddenField1.Value;// Get the paths ;  
 
    // Extract the paths of the selected items ;  
    string[] selectedItemsPaths = serializedItems.Split(new string[] { "{}" }, StringSplitOptions.RemoveEmptyEntries);  
 
    // Use the paths :   
    Label1.Text = "Selected item's count : " + selectedItemsPaths.Length;  
}

VB

Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles Button1.Click  
     Dim serializedItems As String = HiddenField1.Value  
     ' Get the paths ;  
 
     ' Extract the paths of the selected items ;  
       Dim selectedItemsPaths As String() = serializedItems.Split(New String() {"{}"}, StringSplitOptions.RemoveEmptyEntries)  
 
     ' Use the paths :   
       Label1.Text = "Selected item's count : " & selectedItemsPaths.Length  
End Sub