Merge Cells in datatable

Question

Hi All,

<pre lang="HTML">Using SQL server i will fill datatable with values like,

EX:

<b>idnametests</b>

1atest1

1atest2

1atest3

1atest4

1atest5

But i need to show data in the datatable like,

<b>idname tests</b>

1atest1

test2

test3

test4

test5

Can You please help me for doing this in c#