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If your RDLC report is not working and you are encountering a path not found error in your C# WinForms application after generating an executable (EXE), there are a few possible causes and solutions you can explore:
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Verify the report path: Check that the RDLC report file is included in your project and its properties are set correctly. Ensure that the Copy to Output Directory property is set to "Copy Always" or "Copy if Newer" so that the report file is copied to the output folder when building the application.
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Check the report file's location: If the report file is located in a specific folder or subdirectory, make sure that the application's working directory or the relative path to the report file is correctly set. You can use Application.StartupPath
to get the application's startup path and then append the relative path to the report file.
For example:
string reportPath = Path.Combine(Application.StartupPath, "Reports", "report.rdlc");
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Ensure the report file is included in the deployment: When creating the setup or deployment package for your application, make sure that the RDLC report file is included in the package and deployed to the appropriate location on the target machine.
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Check the file permissions: Ensure that the user running the application has sufficient permissions to access the report file and its containing folder. If necessary, adjust the file permissions to allow read access.
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Use an absolute file path: Instead of relying on a relative path, you can try using an absolute file path to the report file. This will ensure that the application can locate the report regardless of its working directory. However, keep in mind that if the report file's location changes, you'll need to update the absolute path in your code.
For example:
string reportPath = @"C:\Reports\report.rdlc";
By following these steps, you should be able to resolve the path not found issue with your RDLC report in your C# WinForms application after generating the executable.

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Double-check that the path to the RDLC report file is specified correctly in your code. If you're using a relative path, ensure that it's relative to the executable's working directory when it's run. You can use AppDomain.CurrentDomain.BaseDirectory
to retrieve the current executable's directory and construct the path relative to it.
string reportPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Reports", "YourReport.rdlc");
In this example, assuming your RDLC file is stored in a "Reports" folder within your project.