# C1.Win.C1Editor.ToolStrips.C1EditorToolStripButton.OnEditorChanging

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<h1 id="C1_Win_C1Editor_ToolStrips_C1EditorToolStripButton_OnEditorChanging_" data-uid="C1.Win.C1Editor.ToolStrips.C1EditorToolStripButton.OnEditorChanging*">OnEditorChanging Method
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<a id="C1_Win_C1Editor_ToolStrips_C1EditorToolStripButton_OnEditorChanging_" data-uid="C1.Win.C1Editor.ToolStrips.C1EditorToolStripButton.OnEditorChanging*"></a>
<h4 id="C1_Win_C1Editor_ToolStrips_C1EditorToolStripButton_OnEditorChanging" data-uid="C1.Win.C1Editor.ToolStrips.C1EditorToolStripButton.OnEditorChanging">OnEditorChanging()</h4>
<div class="markdown level1 summary"><p>Occurs when the editor is changing.</p>
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<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">protected virtual void OnEditorChanging()</code></pre>
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  <pre><code class="lang-vbnet hljs">Protected Overridable Sub OnEditorChanging()</code></pre>
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