How to access rows from multiple tbody in a table?

Question

I have something like this:

<table id="tableId" runat="server">
<thead>
    <tr>
        <th>Example thead1</th>
        <th>Example thead2</th>
   </tr>
</thead>
<tbody id="tb0">
    <tr>
        <td>Example 1</td>
        <td>Something</td>
   </tr>
</tbody>
<tbody id="tb1">
    <tr>
         <td>Example 2</td>
         <td>Something</td></tr>
</tbody>
<tbody id="tb2">
    <tr>
        <td>Example 3</td>
        <td>Something</td>
   </tr>
</tbody>
</table>

I use multiple "tbody" with different IDs so I can delete it or create it anytime I want.

What I'd like to do is getting each row from multiple "tbody" from the table "tableId".

In C#, if I use the command "tableId.Rows[0].Cells[0].InnerHtml", I get the result: "Example thead1".

But if I use "tableId.Rows[3].Cells[0].InnerHtml", I can't get the "Example 3" as available in table row, instead of it I get an error which says that row doesn't exist or it's out of index.

Prakash Patani · Accepted Answer · 2012-04-26 10:23:57Z

0

I have tested the your code. and found that tableId.Rows[3].Cells[0].InnerHtml will give always Example 3 ..that's is correct as per your aspx markup code.

i think you have place row index incorrect i.e. something like below

tableId.Rows[4].Cells[0].InnerHtml which not exist in your table structure.

that's why you get error of Specified argument was out of the range of valid values.Parameter name: index

Hope this will helps you...happy coding...

answered Apr 26, 2012 at 10:23

Prakash Patani

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1 Comment

user1358261 Over a year ago

I'm still having the same problem, even if I try the tableId.Rows[1].Cells[0].InnerHtml. Only the 1st row is working tableId.Rows[0].Cells[0].InnerHtml..

Adrian Iftode · Accepted Answer · 2012-04-26 10:43:07Z

0

Make the tbody elements server controls.

<tbody id="tb2" runat="server">
    <tr>
        <td>Example 3</td>
        <td>Something</td>
   </tr>
</tbody>

Then toggle the visibility as you need:

tb2.Visible = true / false;

As per comment:

Probably the designer doesn't create a reference to tb1, tb2, tb3 controls because they are inner controls of tableId. If so:

var tb2 = tableId.FindControl("tb2");
tb2.Visible = ...

edited Apr 26, 2012 at 10:43

answered Apr 26, 2012 at 9:52

Adrian Iftode

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3 Comments

user1358261 Over a year ago

that didn't work, because when the page loads the tbodys "tb0, tb1, tb2, etc" are not created yet, so I get instantly this error: "CS0103: The name 'tb0' does not exist in the current context"

user1358261 Over a year ago

when I tried what you said I was trying to save tableId.Rows[1].Cells[0].InnerHtml to a string, and you were right, using the "var tb2 = tableId.FindControl("tb2"); tb2.Visible = ..." made my page load error gone, but I still can't save the tableId.Rows[1].Cells[0].InnerHtml to a string, and I still get this error: Specified argument was out of the range of valid values.Parameter name: index

user1358261 Over a year ago

But I also tried to access the only row I can access, which is the first one: tableId.Rows[0].Cells[0].InnerHtml. This time I couldn't save the Example thead1 to a string and I got this error about this line of code "tb0.Visible = true;": Object reference not set to an instance of an object.

Philip.ie · Accepted Answer · 2012-04-26 10:02:00Z

-1

You could use JQuery, something like this....

$('tbody', '#tableid');

But I guess depends on what you want to do with them, and where

JQuery docs:

Selectors: http://api.jquery.com/category/selectors/

Traversing: http://api.jquery.com/category/traversing/

answered Apr 26, 2012 at 10:02

Philip.ie

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2 Comments

user1358261 Over a year ago

I didn't understand it.. I'm trying to access the rows by using C#, so I can save it later to a MSSQL DB

Philip.ie Over a year ago

JQuery is client side so if you want results on the server you will need to use a Json call (or something similar). Here is a post which covers the basics. stackoverflow.com/questions/3926098/… I was just suggesting another way to ‘crack your nut’ ;0)

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