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IsAvailable Method

Summary

Determines whether a TWAIN source is installed.

Syntax

C++

[WebInvokeAttribute(BodyStyle=2, 
   Method="POST", 
   RequestFormat=1, 
   ResponseFormat=1)] 
[OperationContractAttribute(Name="IsAvailable", 
   Action="IsAvailable", 
   AsyncPattern=false, 
   IsOneWay=false, 
   IsInitiating=true, 
   IsTerminating=false)] 
public bool IsAvailable( 
   string id, 
   object userData 
)

<OperationContractAttribute(Name="IsAvailable", Action="IsAvailable")> 
<WebInvokeAttribute(BodyStyle=WebMessageBodyStyle.WrappedRequest,  
   IsBodyStyleSetExplicitly=True,  
   IsRequestFormatSetExplicitly=True,  
   IsResponseFormatSetExplicitly=True,  
   Method="POST",  
   RequestFormat=WebMessageFormat.Json,  
   ResponseFormat=WebMessageFormat.Json)> 
Function IsAvailable( _ 
   ByVal id As String, _ 
   ByVal userData As Object _ 
) As Boolean

[OperationContractAttribute(Name="IsAvailable", Action="IsAvailable")] 
[WebInvokeAttribute(BodyStyle=WebMessageBodyStyle.WrappedRequest,  
   IsBodyStyleSetExplicitly=true,  
   IsRequestFormatSetExplicitly=true,  
   IsResponseFormatSetExplicitly=true,  
   Method="POST",  
   RequestFormat=WebMessageFormat.Json,  
   ResponseFormat=WebMessageFormat.Json)] 
bool IsAvailable(  
   String^ id, 
   Object^ userData 
)