# Design-Time Support

## Content



Expression Editor for WinForms comes with design time options to make your programming tasks easier. Let us discuss about design-time options available in the Expression Editor control.

### C1ExpressionEditor Tasks

In Visual Studio, the Expression Editor control includes a smart tag. This smart tag provides quick and easy access to various common properties through the **C1ExpressionEditor Tasks** smart tag panel. To access the **C1ExpressionEditor Tasks** smart tag panel, click the smart tag icon (![](https://cdn.mescius.io/document-site-files/images/de37eaa0-33b3-4421-b07c-d72c6ec9380d/images/smart-tag.png)) in the upper right corner of the editor. This opens the **C1ExpressionEditor Tasks** smart tag panel as shown in the following image:

![](https://cdn.mescius.io/document-site-files/images/de37eaa0-33b3-4421-b07c-d72c6ec9380d/images/expressioneditorsmartta.png)

The following table provides a brief description of the options provided by C1ExpressionEditor Tasks Smart tag panel:

| **Options** | **Descriptions** |
| --- | --- |
| Choose Data Source | Sets the data source. |
| Set Data Member | Sets the data member. |
| Enable Underline Errors | Underlines the errors. |
| Enable Syntax Highlighting | Highlights the syntax. |