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I need to dynamically provide a ConnectionString to a .trdp at runtime.
I've tried to use a parameter and a binding as stated here: https://docs.telerik.com/reporting/knowledge-base/how-to-pass-connectionstring-to-report-dynamically-through-report-parameter
but I can't get it to work. Without the parameter and binding, the
existing dataSource works fine in preview. I'm using Standalone Report
Designer 13.2.19.1213. When I add the parameter and binding, and put the
connection string value in the parameter input box during preview, I
get an error. See the attached picture that shows all settings.
4 Answers, 1 is accepted
Hello Curt,
I have already answered the same questions in Binding "DataSource" Property forum post.
Regards,
Neli
Progress Telerik
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After looking carefully at https://docs.telerik.com/reporting/expressions-bindings, I noticed that I did not start the binding's expression value with an equal sign, so instead of =Parameters.ConnectionStringParam.Value, I only had Parameters.ConnectionString.Value. I fell into this trap because your page at https://docs.telerik.com/reporting/knowledge-base/how-to-pass-connectionstring-to-report-dynamically-through-report-parameter does not show the equal sign in your example. I suggest showing the equal sign or reminding people that it's needed.
After using the equal sign, the report parameter works fine, and I can dynamically switch the connection string.
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i get the same error
Hi Latha,
I noticed that a similar problem is discussed in the Missing operand before '=' operator forum thread. I would recommend sending me the problematic application, so I can inspect it on my end.