Using the Simple Editor Toolbar

The C1EditorExtender control supports a simplified version of its editing toolbar, which provides these buttons: Bold, Italic, Link, Block Quote, Strikethrough, Insert Date Time, Image Browser, Numbered List, Bulleted List, and Insert Code.

Simply set the mode property to "Simple" to take advantage of this feature.

<wijmo:C1EditorExtender ID="EditorExtender1" runat="server" TargetControlID="TextBox1" Mode="Simple"/>

Create an ASP.NET Web application.
Add a standard TextBox control to the main content of your page.
Resize the TextBox to make it larger, set the TextMode property to MultiLine, and enter some content. For example, use the following XAML markup:

<asp:TextBox ID="TextBox1" runat="server" Height="264px" TextMode="MultiLine" Width="415px">This is some sample text. </asp:TextBox>

Click the TextBox smart tag and select Add Extender from the Tasks menu.
In the Extender Wizard, select C1EditorExtender and click OK. A C1EditorExtender control is added to the page and the TargetControlID is set to TextBox1.
Select View | Properties Window in the Visual Studio menu.
Click the drop-down list at the top of the Properties window and select TextBox1_C1EditorExtender.
Set the C1EditorExtender.Mode property to Simple. Your markup should look similar to this:

<wijmo:C1EditorExtender ID="TextBox1_C1EditorExtender" runat="server" TargetControlID="TextBox1" Mode="Simple">

</wijmo:C1EditorExtender>

Press F5 to run the application. Select text and format using the simple toolbar.