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update: this was only working for me because i still had SelectedValue of the parent grid loading my select parameter of the child grid<br />
<br />
when i try to rely solely on the code posted by microsoft, it actually doesnt work at all<br />
<br />
SqlDataSource s = (SqlDataSource)e.Row.FindC<wbr />ontrol(&quot;SQ<wbr />LISPSteps&quot;<wbr />);<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; s.SelectParameters[0].Defa<wbr />ultValue = e.Row.Cells[0].Text;<br />
<br />
the e.Rows.Cells[0].Text returns NULL when i add a breakpoint and investigate, eventhough as you can clearly see in the image i posted that the values are not null
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update: this was only working for me because i still had SelectedValue of the parent grid loading my select parameter of the child grid

when i try to rely solely on the code posted by microsoft, it actually doesnt work at all

SqlDataSource s = (SqlDataSource)e.Row.FindControl("SQLISPSteps");
            s.SelectParameters[0].DefaultValue = e.Row.Cells[0].Text;

the e.Rows.Cells[0].Text returns NULL when i add a breakpoint and investigate, eventhough as you can clearly see in the image i posted that the values are not null

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hello, i successfully implemented this code:<br />
<br />
<a href="http://msdn.microsoft.com/en-us/library/aa992038(v=VS.90).aspx" rel="ugc">http://msdn.microsoft.com/en-us/library/aa992038(v=VS.90).aspx</a><br />
<br />
the problem i'm having with it is this: I need to be able to suppress the nested grid for rows which are not presently selected, otherwise the control looks completely ridiculous ( see image ) <br />
&nbsp;<a href="https://filedb.experts-exchange.com/incoming/2010/09_w38/348443/gridproblem.JPG" target="_blank" title="grid problem (29 KB)"><img alt="grid problem" class="file-block lazyload" style="max-width: 520px;" data-src="https://filedb.experts-exchange.com/incoming/2010/09_w38/348443/gridproblem.JPG" /></a><br />
the nested grid should ONLY show up for &quot;INCOME&quot; because that is the selected parent category. housing and transportation should not display anything
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gridproblem.JPG

hello, i successfully implemented this code:

http://msdn.microsoft.com/en-us/library/aa992038(v=VS.90).aspx

the problem i'm having with it is this: I need to be able to suppress the nested grid for rows which are not presently selected, otherwise the control looks completely ridiculous ( see image ) 
 

the nested grid should ONLY show up for "INCOME" because that is the selected parent category. housing and transportation should not display anything

suppressing nested GridView if a row is not selected

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