SSRS Report Automation

Jeffrey Verheul has a post showing how to automate Reporting Services report generation in .NET:

But SSRS can also have text-fields as input for your report. These can also be added to the URL. Just like the parameters above, you just add the parameter name and value to the URL: “http:// [servername] :80/ReportServer/Pages/ReportViewer.aspx?%2fTest%2fTestReport&From=2015-12-01&To=2015-12-08&FreeText=This is a test…&rs:Command=Render”.

After some testing I’ve found out that you can use any character in the text parameter you want to, except for the &-sign. If you use that, SSRS will think it’s a parameter or command and won’t accept the URL. And there’s also the (browser) limitation of the URL length. Testing proves that the limit is 7926-7931 characters. If your URL is below 7926 characters, it works like a charm. If you go above that (between 7926 and 7931) the behavior of SSRS gets buggy, and above 7931 characters SSRS will throw an exception.

The trick here is that SSRS has a nice web service, so once you’re familiar with it, generating reports is easy.

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