# C1.Blazor.TreeView.C1TreeView.C1TreeViewReference.OnDragOverAsync

## Content

<div class="doc-site-dotnet-api-container">



<h1 id="C1_Blazor_TreeView_C1TreeView_C1TreeViewReference_OnDragOverAsync_" data-uid="C1.Blazor.TreeView.C1TreeView.C1TreeViewReference.OnDragOverAsync*">OnDragOverAsync Method
</h1>
<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_Blazor_TreeView_C1TreeView_C1TreeViewReference_OnDragOverAsync_" data-uid="C1.Blazor.TreeView.C1TreeView.C1TreeViewReference.OnDragOverAsync*"></a>
<h4 id="C1_Blazor_TreeView_C1TreeView_C1TreeViewReference_OnDragOverAsync_System_String_System_String_System_String_System_String_" data-uid="C1.Blazor.TreeView.C1TreeView.C1TreeViewReference.OnDragOverAsync(System.String,System.String,System.String,System.String)">OnDragOverAsync(string, string, string, string)</h4>
<div class="markdown level1 summary"></div>
<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">[JSInvokable]
public Task&lt;bool&gt; OnDragOverAsync(string targetDragId, string targetDragTreeId, string targetDropId, string targetDropTreeId)</code></pre>
</div>
<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">&lt;JSInvokable&gt;
Public Function OnDragOverAsync(targetDragId As String, targetDragTreeId As String, targetDropId As String, targetDropTreeId As String) As Task(Of Boolean)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Name</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.string">string</a></td>
      <td><span class="parametername">targetDragId</span></td>
      <td></td>
    </tr>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.string">string</a></td>
      <td><span class="parametername">targetDragTreeId</span></td>
      <td></td>
    </tr>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.string">string</a></td>
      <td><span class="parametername">targetDropId</span></td>
      <td></td>
    </tr>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.string">string</a></td>
      <td><span class="parametername">targetDropTreeId</span></td>
      <td></td>
    </tr>
  </tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.threading.tasks.task-1">Task</a>&lt;<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.boolean">bool</a>&gt;</td>
      <td></td>
    </tr>
  </tbody>
</table>
</div>