C# NotSupportedException when adding InnerHTML into a HTML table

Question

In my .aspx file I have the table below:

 <table id="table1" style="width: 100%;" runat="server"></table>

I want to access this table and insert html into this table in C#(.aspx.cs),I tried this:

 HtmlTable table = (HtmlTable)(form1.FindControl("table1"));
 table.InnerHtml = "<tr><td></td></tr>";

But I got NotSupportedException. How can I solve this?

Well, the documentation does indeed say you can't use InnerHtml: http://msdn.microsoft.com/en-us/library/system.web.ui.htmlcontrols.htmltable.innerhtml(v=vs.110).aspx — Will Eddins, May 07 '14 at 20:53
Are you trying to add rows to the table? If so you should use HtmlTable.Rows.Add and the newly created row. Have a look here for some sample code: http://msdn.microsoft.com/en-us/library/system.web.ui.htmlcontrols.htmltable.rows(v=vs.110).aspx — Laird Streak, May 07 '14 at 20:55

score 4 · Accepted Answer · answered May 07 '14 at 20:42

4

If the control does not have a runat="server" your code behind will not be able to access the object at runtime. :)

answered May 07 '14 at 20:42

Laird Streak

Can you update the origional text? And perhaps show more of .aspx code. – Laird Streak May 07 '14 at 20:51

score 3 · Answer 2 · edited May 23 '17 at 11:57

3

use runat server to make the table available serverside

<table runat="server" id="table1" style="width: 100%;"></table>

edited May 23 '17 at 11:57

Community

answered May 07 '14 at 20:42

Morten Anderson

score 1 · Answer 3 · answered May 07 '14 at 20:44

1

If you want to be able to retrieve the table in the code-behind, you need to use a .Net control and declare your table using

<asp:Table runat="server" ... />
     ...
</table>

answered May 07 '14 at 20:44

dckuehn

3 Answers3