Verifies that the first string contains the second string. Displays a message if the assertion fails, and applies the specified formatting to it. This method is case sensitive.
Namespace:  Microsoft.VisualStudio.TestTools.UnitTesting
Assembly:  Microsoft.VisualStudio.QualityTools.UnitTestFramework (in Microsoft.VisualStudio.QualityTools.UnitTestFramework.dll)
Syntax
'Declaration
Public Shared Sub Contains ( _
    value As String, _
    substring As String, _
    message As String, _
    ParamArray parameters As Object() _
)
public static void Contains(
    string value,
    string substring,
    string message,
    params Object[] parameters
)
public:
static void Contains(
    String^ value, 
    String^ substring, 
    String^ message, 
    ... array<Object^>^ parameters
)
static member Contains : 
        value:string * 
        substring:string * 
        message:string * 
        parameters:Object[] -> unit
public static function Contains(
    value : String, 
    substring : String, 
    message : String, 
    ... parameters : Object[]
)
Parameters
- value 
 Type: String- The string that is expected to contain substring. 
- substring 
 Type: String- The string expected to occur within value. 
- message 
 Type: String- A message to display if the assertion fails. This message can be seen in the unit test results. 
- parameters 
 Type: array<Object[]- An array of parameters to use when formatting message. 
Exceptions
| Exception | Condition | 
|---|---|
| AssertFailedException | substring is not found in value. | 
Remarks
The assertion fails if the substring does not occur within the string.
.NET Framework Security
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.