Behavior of "class" property on UserControl

A

Alex Maghen

Let's say I have a UserControl <Ax:MyCtl> and the only tag inside that ascx
file looks like:

<div id="MainDiv" class="InnerCssClass">
SomeText Here
</div>

Now, let's say I have a page that uses MyCtl...

<body>
<Ax:MyCtl id="MyCtl1" class="OuterCssClass" />
</body>

Here's what I've noticed: The "InnerCssClass" will be applied to the
"MainDiv" div inside the control, but "OuterCssClass" which is set on the
actual instance of the control on the page will have no effect.

Do I have to actually implement a Property inside MyCtl called "class" and
then apply it to the Div inside my control? Also on standard tags, I can use
"class" *or* CssClass. For my control, do I have to implement a Property for
both "class" and "CssClass"?

Your help is much appreciated.

Alex
 
A

Allen Chen [MSFT]

Hi Alex,

From your description I think you need the OuterCssClass take place of the
InnerCssClass when it's set on the page. If so we can add a property for
the UserControl. Here's the sample that demonstrates how to achieve the
requirement:

Ascx:

<%@ Control Language="C#" AutoEventWireup="true"
CodeBehind="WebUserControl1.ascx.cs"
Inherits="WebApplication2.WebUserControl1" %>
<div id="MainDiv" runat="server" class="InnerCssClass">
SomeText Here
</div>

Ascx.cs:

public partial class WebUserControl1 : System.Web.UI.UserControl
{
protected void Page_PreRender(object sender, EventArgs e)
{
if (this.CssClass != string.Empty)
{
this.MainDiv.Attributes.Add("class", this.CssClass);
}

}
public virtual string CssClass
{
get
{
string str = (string)this.ViewState["CssClass"];
if (str != null)
{
return str;
}
return string.Empty;
}
set
{
this.ViewState["CssClass"] = value;
}
}


}

Aspx:

<uc1:WebUserControl1 ID="WebUserControl11" runat="server"
CssClass="OuterCssClass" />

The key point is to add the class to div when the CssClass is not empty
string.

Please try it to see if it works. If you have further questions please feel
free to ask.

Regards,
Allen Chen
Microsoft Online Community Support

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A

Allen Chen [MSFT]

Hi Alex,

Have you solved this issue?

Regards,
Allen Chen
Microsoft Online Community Support
 

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