# C1.Win.ExpressionEditor.ExpressionEditorCollection.OpenExpressionEditorForm

## Content

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<h1 id="C1_Win_ExpressionEditor_ExpressionEditorCollection_OpenExpressionEditorForm_" data-uid="C1.Win.ExpressionEditor.ExpressionEditorCollection.OpenExpressionEditorForm*">OpenExpressionEditorForm Method
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<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_Win_ExpressionEditor_ExpressionEditorCollection_OpenExpressionEditorForm_" data-uid="C1.Win.ExpressionEditor.ExpressionEditorCollection.OpenExpressionEditorForm*"></a>
<h4 id="C1_Win_ExpressionEditor_ExpressionEditorCollection_OpenExpressionEditorForm_System_String_System_String_System_Boolean_System_Nullable_System_Drawing_Point__" data-uid="C1.Win.ExpressionEditor.ExpressionEditorCollection.OpenExpressionEditorForm(System.String,System.String,System.Boolean,System.Nullable{System.Drawing.Point})">OpenExpressionEditorForm(string, string, bool, Point?)</h4>
<div class="markdown level1 summary"><p>Opens ExpressionEditorForm to edit expression of C1ExpressionEditor with specified column name.</p>
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<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public string OpenExpressionEditorForm(string column, string caption, bool showApplyButton, Point? location = null)</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Function OpenExpressionEditorForm(column As String, caption As String, showApplyButton As Boolean, Optional location As Point? = Nothing) As String</code></pre>
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<h5 class="parameters">Parameters</h5>
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  <thead>
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      <th>Type</th>
      <th>Name</th>
      <th>Description</th>
    </tr>
  </thead>
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    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.string">string</a></td>
      <td><span class="parametername">column</span></td>
      <td><p>specified column name.</p>
</td>
    </tr>
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      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.string">string</a></td>
      <td><span class="parametername">caption</span></td>
      <td><p>dialog caption.</p>
</td>
    </tr>
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      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.boolean">bool</a></td>
      <td><span class="parametername">showApplyButton</span></td>
      <td><p>the value determines whether to show the Apply button.</p>
</td>
    </tr>
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      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.drawing.point">Point</a>?</td>
      <td><span class="parametername">location</span></td>
      <td><p>the initial position of the dialog.</p>
</td>
    </tr>
  </tbody>
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<h5 class="returns">Returns</h5>
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  <thead>
    <tr>
      <th>Type</th>
      <th>Description</th>
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    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.string">string</a></td>
      <td></td>
    </tr>
  </tbody>
</table>
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