SQL Reporting :: Change The Report Datasource At Run Time?
Feb 4, 2010
created a data source DS_QCategory that select data from a table but according a passed parameter which is a DDL selectvalue.I write the sql statement like this (select * from myTable where ({fn YEAR(tblarQuestions.QuestionDate)} LIKE (@QuestionDate)))this function will compare only the Year from my full date field with a DDL that include all Years like 2008, 2009, 2010 Then I create a report using reportviewer control and i defined the parameter in the bjectDataSource of the report then I added to my Years list in the DDL something like this "All" to select all data from myTable regardless the parameter so i created another Datasource DS_QCategoryAll to select all data from myTablewhat I need is to change the object data source of my report once "All" is selected: this is my code:
[Code]....
But get this error:
"
A data source instance has not been supplied for the data source 'DS_QCategory_tblarQuestionCategory'
"
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[Code]....
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