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How to bind two tables to one chart alternatively

Guest Tingjun Fan

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Guest Tingjun Fan

I have two datatables, say tb1 and tb2. tb1 contains four columns: month, expense, revenue, net. tb2 contains two columns: month, wine sales.


I need to display the chart for tb1 and tb2 alternatively.


I use the following statement to bind the data to the chart tFXChart:



tFXChart.DataSource = tb1;


No problem there.


But later on when I tried to do the same thing by replacing tb1 with tb2, the chart shows errors.


If I tried to add code like the following before the lines, I got different types of errors or tb2 just fails to show (saying no data).





Can someone tell me what I'm missing? Thanks in advance for your help.

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