TreeNodeStyle.Reset Metodo

Definizione

Restituisce lo stato originale dell'oggetto TreeNodeStyle.Returns the TreeNodeStyle object to its original state.

public:
 override void Reset();
public override void Reset ();
override this.Reset : unit -> unit
Public Overrides Sub Reset ()

Esempio

Nell'esempio di codice riportato di seguito viene illustrato Reset come utilizzare il metodo TreeNodeStyle per ripristinare lo stato predefinito dell'oggetto.The following code example demonstrates how to use the Reset method to return the TreeNodeStyle object to its default state.


<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

  void MergeButton_Click(Object sender, EventArgs e)
  {

    // Combine the leaf node styles of the TreeNodeOne TreeView and the 
    // TreeViewResults TreeView.
    TreeViewResults.LeafNodeStyle.MergeWith(TreeViewOne.LeafNodeStyle);

  }

  void ResetButton_Click(Object sender, EventArgs e)
  {

    // Reset the LeafNodeStyle of the TreeViewResults TreeView.
    TreeViewResults.LeafNodeStyle.Reset();

  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>TreeNodeStyle MergeWith Example</title>
</head>
<body>  
    <form id="form1" runat="server">
    
      <h3>TreeNodeStyle MergeWith Example</h3>
      
      <table cellspacing="30">
        
        <tr>
        
          <th>
          
            TreeView One
          
          </th>
          
          <th>
          
            TreeView Result
          
          </th>
        
        </tr>
        
        <tr valign="top">
        
          <td>
          
            <!-- Set the styles for the leaf nodes declaratively. -->
            <asp:TreeView id="TreeViewOne"
              ExpandDepth="4" 
              LeafNodeStyle-BackColor="Yellow"
              LeafNodeStyle-Font-Bold="true"  
              LeafNodeStyle-ForeColor="Black"  
              runat="server">
         
              <Nodes>
        
                <asp:TreeNode Text="Table of Contents"
                  SelectAction="None">
             
                  <asp:TreeNode Text="Chapter One">
            
                    <asp:TreeNode Text="Section 1.0">
              
                      <asp:TreeNode Text="Topic 1.0.1"/>
                      <asp:TreeNode Text="Topic 1.0.2"/>
                      <asp:TreeNode Text="Topic 1.0.3"/>
              
                    </asp:TreeNode>
              
                  </asp:TreeNode>
            
                </asp:TreeNode>
        
              </Nodes>
        
            </asp:TreeView>
          
          </td>
          
          <td>
          
            <!-- Set the styles for the leaf nodes declaratively. -->
            <asp:TreeView id="TreeViewResults"
              ExpandDepth="4" 
              LeafNodeStyle-ForeColor="Green"  
              runat="server">
         
              <Nodes>
        
                <asp:TreeNode Text="Table of Contents"
                  SelectAction="None">
             
                  <asp:TreeNode Text="Chapter One">
            
                    <asp:TreeNode Text="Section 1.0">
              
                      <asp:TreeNode Text="Topic 1.0.1"/>
                      <asp:TreeNode Text="Topic 1.0.2"/>
                      <asp:TreeNode Text="Topic 1.0.3"/>
              
                    </asp:TreeNode>
              
                  </asp:TreeNode>
            
                </asp:TreeNode>
        
              </Nodes>
        
            </asp:TreeView>
          
          </td>
        
        </tr>
        
        <tr>
        
          <td>
          
            <asp:Button ID="MergeNodeStyleButton" 
              Text="Merge LeafNodeStyle"
              OnClick="MergeButton_Click" 
              runat="server"/>
          
          </td>
          
          <td>
          
            <asp:Button ID="ResetButton" 
              Text="Reset LeafNodeStyle"
              OnClick="ResetButton_Click" 
              runat="server"/>
          
          </td>
        
        </tr>
      
      </table>
       
    </form>
  </body>
</html>


<%@ Page Language="VB" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

  Sub MergeButton_Click(ByVal sender As Object, ByVal e As EventArgs)

    ' Combine the leaf node styles of the TreeNodeOne TreeView and the 
    ' TreeViewResults TreeView.
    TreeViewResults.LeafNodeStyle.MergeWith(TreeViewOne.LeafNodeStyle)

  End Sub

  Sub ResetButton_Click(ByVal sender As Object, ByVal e As EventArgs)

    ' Reset the LeafNodeStyle of the TreeViewResults TreeView.
    TreeViewResults.LeafNodeStyle.Reset()

  End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>TreeNodeStyle MergeWith Example</title>
</head>
<body>  
    <form id="form1" runat="server">
    
      <h3>TreeNodeStyle MergeWith Example</h3>
      
      <table cellspacing="30">
        
        <tr>
        
          <th>
          
            TreeView One
          
          </th>
          
          <th>
          
            TreeView Result
          
          </th>
        
        </tr>
        
        <tr valign="top">
        
          <td>
          
            <!-- Set the styles for the leaf nodes declaratively. -->
            <asp:TreeView id="TreeViewOne"
              ExpandDepth="4" 
              LeafNodeStyle-BackColor="Yellow"
              LeafNodeStyle-Font-Bold="true"  
              LeafNodeStyle-ForeColor="Black"  
              runat="server">
         
              <Nodes>
        
                <asp:TreeNode Text="Table of Contents"
                  SelectAction="None">
             
                  <asp:TreeNode Text="Chapter One">
            
                    <asp:TreeNode Text="Section 1.0">
              
                      <asp:TreeNode Text="Topic 1.0.1"/>
                      <asp:TreeNode Text="Topic 1.0.2"/>
                      <asp:TreeNode Text="Topic 1.0.3"/>
              
                    </asp:TreeNode>
              
                  </asp:TreeNode>
            
                </asp:TreeNode>
        
              </Nodes>
        
            </asp:TreeView>
          
          </td>
          
          <td>
          
            <!-- Set the styles for the leaf nodes declaratively. -->
            <asp:TreeView id="TreeViewResults"
              ExpandDepth="4" 
              LeafNodeStyle-ForeColor="Green"  
              runat="server">
         
              <Nodes>
        
                <asp:TreeNode Text="Table of Contents"
                  SelectAction="None">
             
                  <asp:TreeNode Text="Chapter One">
            
                    <asp:TreeNode Text="Section 1.0">
              
                      <asp:TreeNode Text="Topic 1.0.1"/>
                      <asp:TreeNode Text="Topic 1.0.2"/>
                      <asp:TreeNode Text="Topic 1.0.3"/>
              
                    </asp:TreeNode>
              
                  </asp:TreeNode>
            
                </asp:TreeNode>
        
              </Nodes>
        
            </asp:TreeView>
          
          </td>
        
        </tr>
        
        <tr>
        
          <td>
          
            <asp:Button ID="MergeNodeStyleButton" 
              Text="Merge LeafNodeStyle"
              OnClick="MergeButton_Click" 
              runat="server"/>
          
          </td>
          
          <td>
          
            <asp:Button ID="ResetButton" 
              Text="Reset LeafNodeStyle"
              OnClick="ResetButton_Click" 
              runat="server"/>
          
          </td>
        
        </tr>
      
      </table>
       
    </form>
  </body>
</html>

Commenti

Usare il Reset metodo per rimuovere tutti gli elementi di stile definiti in precedenza TreeNodeStyle e reimpostare l'oggetto sullo stato originale (ovvero il valore predefinito).Use the Reset method to remove any previously defined style elements and reset the TreeNodeStyle object to its original (that is, default) state.

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