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I'm trying to implement a custom Toolbox tool in ArcGIS, and am trying to setup a custom GPParameter that will take a file type with a specific extension. I know that DEFileType is available and will provide a file browser. How do you set a filter for specific file types using this object? I suspect this needs to be done via IGxFilterInfo, but am unable to find any relevant documentation or examples, and am having a difficult time finding an example anywhere. |
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You will need to set the parameter's Domain property with the appropriate domain information. In your case, you will use the GPFileDomain class. Through its IGPFileDomain interface, you can add acceptable file types via the IGPFileDomain.AddType method. This method takes a string representing the file extension without the preceding dot. The file dialog will show your "myext" (an example) extension as "File (*.myext)" filter text. You cannot (easily at least) change the "File" part of the text but that is a minor problem I guess. |
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There's a way you can do it though. If you write a custom control for the parameter and bind it to the parameter with ControlCLSID, you can add a button to the control that opens an OpenFileDialog. Evaluate the parameter's domain and set the dialog's Filter property to what you need. |
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