How to Drag File Names from RadGridView and Drop Them to Windows Explorer

Environment

Product Version	Product	Author
2022.2.510	RadGridView for WinForms	Desislava Yordanova

Description

This article demonstrates how to drag a file that is stored as a file path in RadGridView and drop it onto the Windows File Explorer. As a result, the file is copied.

Solution

In order to drag a file, stored in the appropriate way in RadGridView and drop it onto the FileExplorer, it would be necessary to use the standard OLE drag and drop.

If you want to move the file instead of copying it, feel free to use DragDropEffects.Move when starting the drag operation.

• C#
• VB.NET

public RadForm1()
{
    InitializeComponent(); 
    this.radGridView1.Columns.Add("FilePath");
    this.radGridView1.AutoSizeColumnsMode = Telerik.WinControls.UI.GridViewAutoSizeColumnsMode.Fill;
    this.radGridView1.Rows.Add(@"C:\Projects\1563969GridViewDragFileToFileExplorer\1563969GridViewDragFileToFileExplorer\Doc1.txt");
    this.radGridView1.Rows.Add(@"C:\Projects\1563969GridViewDragFileToFileExplorer\1563969GridViewDragFileToFileExplorer\Doc2.txt");
    this.radGridView1.Rows.Add(@"C:\Projects\1563969GridViewDragFileToFileExplorer\1563969GridViewDragFileToFileExplorer\Doc3.txt");

    this.radGridView1.MouseDown += radGridView1_MouseDown;
}

private void radGridView1_MouseDown(object sender, MouseEventArgs e)
{
    if (e.Button == MouseButtons.Left && this.radGridView1.CurrentRow != null)
    {
        string filePath = this.radGridView1.CurrentRow.Cells["FilePath"].Value.ToString();
        string[] files = new string[] { filePath };
        this.DoDragDrop(new DataObject(DataFormats.FileDrop, files), DragDropEffects.Copy);
    }
}

Sub New()
    InitializeComponent()

    Me.RadGridView1.Columns.Add("FilePath")
    Me.RadGridView1.AutoSizeColumnsMode = Telerik.WinControls.UI.GridViewAutoSizeColumnsMode.Fill
    Me.RadGridView1.Rows.Add("C:\Projects\1563969GridViewDragFileToFileExplorer\1563969GridViewDragFileToFileExplorer\Doc1.txt")
    Me.RadGridView1.Rows.Add("C:\Projects\1563969GridViewDragFileToFileExplorer\1563969GridViewDragFileToFileExplorer\Doc2.txt")
    Me.RadGridView1.Rows.Add("C:\Projects\1563969GridViewDragFileToFileExplorer\1563969GridViewDragFileToFileExplorer\Doc3.txt")

    AddHandler Me.RadGridView1.MouseDown, AddressOf RadGridView1_MouseDown
End Sub

Private Sub RadGridView1_MouseDown(sender As Object, e As MouseEventArgs)
    If e.Button = Windows.Forms.MouseButtons.Left AndAlso Me.RadGridView1.CurrentRow IsNot Nothing Then
        Dim filePath As String = Me.RadGridView1.CurrentRow.Cells("FilePath").Value.ToString()
        Dim files As String() = New String() {filePath}
        Me.DoDragDrop(New DataObject(DataFormats.FileDrop, files), DragDropEffects.Copy)
    End If
End Sub