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I have created a winform data entry connected to .accdb as source The entry part is done, and i have given a button to open another which must contain the summary of the data in table & in graph format.

I have created the table successfully in "Report1.rdlc" and used it in my form2 using report viewer.

I have created another report"report2.rdlc" and when i used it in my form2 using report viewer the below error is coming:

A data source instance has not been supplied for the data source 'Dataset1'

A data source instance has not been supplied for the data source 'Dataset1'

What I have tried:

and here is the code for form load event
namespace WindowsFormsApp1
    public partial class MS_Dies_Report : Form
        public MS_Dies_Report()

        private void MS_Dies_Report_Load(object sender, EventArgs e)
            // TODO: This line of code loads data into the 'TrialDataSet.MSdies' table. You can move, or remove it, as needed.

Updated 29-Jul-20 23:06pm

1 solution

As with this question you posted: Binding source update error after updating the databse accdb[^], you need to check the spelling of your variable references.
Member 14898617 30-Jul-20 5:13am
Hi thank you for your reply ..this has nothing to do with the variable names because i corrected them already ..the solution i want is to know how to create two reports using same data set & that too one table & graph & show them in two report viewers of same form
Richard MacCutchan 30-Jul-20 5:43am
Look at the error message, it is clearly telling you what is wrong. That is the issue that you need to correct.

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