How to use Single Quotes in Eval Format String

Question

I\'ve got a Repeater and its SqlDatasource nested inside a Gridview TemplatedField.
The Repeater\'s datasource SelectCommand is set using the FormatString of an Eval fro

Answer 1

Store your sql queries in properties in your Page class. Not only does it work :-) but it makes your code easier to read and maintain.

Oh, and you should use parameters in your queries instead of doing string replacements. That will solve the problem by removing the need for single quotes.

Answer 2

Why don't you define this WHERE clause as a const in your codebehind. Define:

protected const string SELECTCLAUSE = 
"SELECT Blah FROM TableName WHERE (StringField = '{0}')";

Then your SelectCommand property would be:

SelectCommand='<%# Eval("Bar", SELECTCLAUSE ) %>'

Answer 3

Have you tried escaping the single quote characters?

... WHERE (StringField = \'{0}\') ...

Answer 4

Don't forget that a .aspx page is simply XML. You just escape the quotes as you normally would.

For example:

<asp:Repeater ID="repeatTheLabel" runat="server">
    <ItemTemplate>
        <asp:Label ID="Label1" Text="<%# Eval(&quot;Id&quot;, &quot;This is item '{0}'.&quot;) %>" runat="server" />
    </ItemTemplate>
    <SeparatorTemplate>
        <br />
    </SeparatorTemplate>
</asp:Repeater>

When the above expression is databound the value between <%# and %> becomes:

Eval("Id", "This is item '{0}'.")

...which produces on the HTML page as output when databound with an array of objects with "Id" property values from 1 to 5:

This is item '1'.
This is item '2'.
This is item '3'.
This is item '4'.
This is item '5'.