how to remove plus and minus symbols in treeview checkbox co

Question

how to remove plus and minus symbols in treeview checkbox controls.

only view 3checkbox  .1st checkbox morethan one checkbox at the same method view 2nd and third

checkbox.1st checkbox select all sub checkbox automatically select and deselect the checkbox at the same time delect the all sub checkbox.this same method view 2nd and 3rd root check box controls.

 

 

 

<asp:TreeView ID="TreeView1" ShowCheckBoxes="All" runat="server" SelectionMode="Single" PathSeparator="0">
<Nodes>
<asp:TreeNode Text="Residential Land" Value="Residential Land">
<asp:TreeNode Text="New Node" Value="New Node"></asp:TreeNode>
<asp:TreeNode Text="New Node" Value="New Node"></asp:TreeNode>
<asp:TreeNode Text="New Node" Value="New Node"></asp:TreeNode>
<asp:TreeNode Text="New Node" Value="New Node"></asp:TreeNode>
<asp:TreeNode Text="New Node" Value="New Node"></asp:TreeNode>
<asp:TreeNode Text="New Node" Value="New Node"></asp:TreeNode>
</asp:TreeNode>
<asp:TreeNode Text="Commercial Land" Value="Commercial Land">
<asp:TreeNode Text="New Node" Value="New Node"></asp:TreeNode>
<asp:TreeNode Text="New Node" Value="New Node"></asp:TreeNode>
<asp:TreeNode Text="New Node" Value="New Node"></asp:TreeNode>
<asp:TreeNode Text="New Node" Value="New Node"></asp:TreeNode>
</asp:TreeNode>
<asp:TreeNode Text="Project" Value="Project">
<asp:TreeNode Text="New Node" Value="New Node"></asp:TreeNode>
<asp:TreeNode Text="New Node" Value="New Node"></asp:TreeNode>
<asp:TreeNode Text="New Node" Value="New Node"></asp:TreeNode>
<asp:TreeNode Text="New Node" Value="New Node"></asp:TreeNode>
</asp:TreeNode>
</Nodes>
</asp:TreeView>