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Pager not showing for GridView RSS

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Last post Apr 02, 2013 06:23 PM by maximummike

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banksidepoet

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Pager not showing for GridView

Dec 01, 2012 07:13 PM|LINK

Hi,

I have the following GridView code:

<asp:GridView ID="listProductsGridView" runat="server" AutoGenerateColumns="False"
			DataSourceID="getProductsSqlDataSource" Width="500px" CssClass="productGV" BorderStyle="Solid"
			BorderWidth="1px" BorderColor="#CCCCCC" AlternatingRowStyle-BackColor="#FAFAFA"
			AlternatingRowStyle-CssClass="ARStyle" ForeColor="#505050" HeaderStyle-BackColor="#EEEEEE"
			HeaderStyle-ForeColor="#1E5E9F" HorizontalAlign="Center" HeaderStyle-HorizontalAlign="Center"
			HeaderStyle-VerticalAlign="Middle" HeaderStyle-Height="30px" HeaderStyle-CssClass="prodGVHeader"
			CellPadding="4" RowStyle-BorderStyle="Solid" RowStyle-BorderWidth="1px" RowStyle-BorderColor="#CCCCCC"
			RowStyle-Height="50px" DataKeyNames="product_id" OnRowCommand="listProductsGridView_RowCommand"
			OnRowCreated="listProductsGridView_RowCreated"
			OnRowDataBound="listProductsGridView_RowDataBound" AllowPaging="True"
			AllowSorting="True" PageSize="6">
			<AlternatingRowStyle BackColor="#FAFAFA" CssClass="ARStyle"></AlternatingRowStyle>

...

<Columns...>

...

	<HeaderStyle HorizontalAlign="Center" VerticalAlign="Middle" BackColor="#EEEEEE"
				CssClass="prodGVHeader" ForeColor="#003399" Height="30px"></HeaderStyle>
			<PagerSettings Mode="NumericFirstLast" Position="TopAndBottom" />
			<RowStyle BorderColor="#CCCCCC" BorderWidth="1px" BorderStyle="Solid"></RowStyle>

There are 15 rows in the unpaged GridView.

The Pager doesnt show on the GridView, top OR bottom.

Have I made an obvious error here?

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paindaasp

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2034 Posts

Re: Pager not showing for GridView

Dec 01, 2012 08:23 PM|LINK

If I take your Gridview , use my DataSource and all default events, I get the pagers on the header and footer. So, its nothing obvious. That leads me to believe it's either in the CSS or the OnRowDataBound or OnRowCreated events. I'd check CSS.
- Edited by paindaasp on Dec 01, 2012 08:24 PM
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oned_gk

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Re: Pager not showing for GridView

Dec 01, 2012 11:58 PM|LINK
I am not sure what the problem. How many rows displayed in GV? Maybe you can do some test

In databound event try set label text
```
Label1.Text = listProducsGridview.PageCount.ToString();
```
Try also to reset pagersetting to default by removing
```
<PagerSettings Mode="NumericFirstLast" Position="TopAndBottom" /> 
```
You can also check how many rows your GV datasource
```
label2.text = dt.rows.count.tostring();
```
Programming to simplify, dont look for hard way
- Edited by oned_gk on Dec 01, 2012 11:59 PM
- Edited by oned_gk on Dec 02, 2012 12:01 AM
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banksidepoet

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774 Points

862 Posts
Re: Pager not showing for GridView

Dec 02, 2012 02:54 PM|LINK
paindaasp

Thanks for the response.

You were right: not CSS but this code:
```
protected void listProductsGridView_RowDataBound(object sender, GridViewRowEventArgs e)
		{
			// e.Row.Cells[0].Visible = false;
		}
```
It's commented out here, and doing this made the pager appear.

The reason I have this line at all is explained best in one of my earlier posts:

http://forums.asp.net/t/1860395.aspx/1?Hiding+an+ID+column+in+a+GridView

You can see from my last post in this short thread what I did and why.

BUT your solution causes me two problems:
1. How can I achieve what I did from that thread WITHOUT using this code?
2. If I remove this code, I get an error elsewhere...
```
protected void listProductsGridView_RowCommand(object sender, GridViewCommandEventArgs e)
		{
			GridViewRow row = ((System.Web.UI.WebControls.GridView)(sender)).Rows[int.Parse(e.CommandArgument.ToString())];

			string idString = row.Cells[0].Text;
			int id = Convert.ToInt32(idString);
```
The error is: Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index

and the highlighted (red) row in the error page is "GridView row = ..." but I guess the error is the next line.

However, it IS the first column I'm after, which WOULD be index 0, yes?

Here's the MarkUp for that column:
```
<asp:BoundField DataField="product_id" Visible="true" />
```
Any ideas with either of these two extra problems?

Thanks
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oned_gk

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Re: Pager not showing for GridView

Dec 02, 2012 03:04 PM|LINK
when using rowdatabound event use if : If (e.Row.RowType = DataControlRowType.DataRow) ...

Programming to simplify, dont look for hard way
- Edited by oned_gk on Dec 02, 2012 03:09 PM
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banksidepoet

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774 Points

862 Posts
Re: Pager not showing for GridView

Dec 02, 2012 03:18 PM|LINK
oned_gk.

Thamnks for the reposnse.

I have implemented your suggestion.
```
protected void listProductsGridView_RowDataBound(object sender, GridViewRowEventArgs e)
		{
			if (e.Row.RowType == DataControlRowType.DataRow)
			{
				e.Row.Cells[0].Visible = false;
			}
		}
```
It doesn't seem to matter whether this line is commented out or not... on page load the GridView displays properly including Pager. The number of pages available from the Pager is right but, when I click on a Pager Number representing ANY other page than the one I'm on, I get the same error posted above. Upon debugging, the value of "e.CommandArgument" is "2" (the number of the page I tried to navigate to). I have 15 products and PageSize set to "2" (number 1 to 8 in the pager - correct). It seems to be the pager causing the error, not the RowCommand.

What is interesting is that the code in the RowCommand handler is intended to fire only when the button in each row is clicked. Is this some kind of ValidationGroup issue: changing the page via the pager is resulting in the effect of the button in each row being clicked? Even if this was the case, why can't it get the value of the first column?

If you have any ideas, I'd appreciate those.

Also, I'm desperately in need of urgent help with this: http://forums.asp.net/t/1862740.aspx/1?Urgent+help+needed+with+RowCommand+of+GridView as it's another RowCommand issue and you seem to know what you're talking about with this stuff.

Thanks.
- Edited by banksidepoet on Dec 02, 2012 03:22 PM
- Edited by banksidepoet on Dec 02, 2012 03:24 PM
- Edited by banksidepoet on Dec 02, 2012 03:26 PM
- Edited by banksidepoet on Dec 02, 2012 03:26 PM
- Edited by banksidepoet on Dec 02, 2012 03:30 PM
- Edited by banksidepoet on Dec 02, 2012 03:33 PM
- Edited by banksidepoet on Dec 02, 2012 03:37 PM
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oned_gk

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Re: Pager not showing for GridView

Dec 02, 2012 03:37 PM|LINK
try set btn commandname="abc" and CommandArgument='<%# Container.DataItemIndex %>' . In rowcommand event use if : if (e.commandname=="abc") ... Int idx=e.commandargument ...

Programming to simplify, dont look for hard way
- Edited by oned_gk on Dec 02, 2012 03:39 PM
- Edited by oned_gk on Dec 02, 2012 03:45 PM
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banksidepoet

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862 Posts

Re: Pager not showing for GridView

Dec 02, 2012 03:38 PM|LINK

oned_gk,

Apologies, can you expand on that a little? Bit above my head.

Can't set CommandArgument on a ButtonField.
- Edited by banksidepoet on Dec 02, 2012 03:48 PM
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oned_gk

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6419 Posts

Re: Pager not showing for GridView

Dec 02, 2012 03:51 PM|LINK
GridViewRow row = ((System.Web.UI.WebControls. GridView)(sender)).Rows[idx]; see previous post

Programming to simplify, dont look for hard way
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banksidepoet

Participant

774 Points

862 Posts
Re: Pager not showing for GridView

Dec 02, 2012 04:05 PM|LINK
oned_gk,

Again, forgive my ignorance but what do you mean by [idx]?

My current line is:
```
[int.Parse(e.CommandArgument.ToString())]
```
Are you asking me to replace this with something?

Also, CommandArgument is not allowed in a ButtonField. What can I do about this?

The ButtonField works perfectly well with my existing code (in that the id in column one is grabbed successfully at each button click. The error here is only present upon changing pages using the Pager.
- Edited by banksidepoet on Dec 02, 2012 04:07 PM

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Pager not showing for GridView RSS

16 replies

banksidepoet

Pager not showing for GridView

paindaasp

Re: Pager not showing for GridView

oned_gk

Re: Pager not showing for GridView

banksidepoet

Re: Pager not showing for GridView

oned_gk

Re: Pager not showing for GridView

banksidepoet

Re: Pager not showing for GridView

oned_gk

Re: Pager not showing for GridView

banksidepoet

Re: Pager not showing for GridView

oned_gk

Re: Pager not showing for GridView

banksidepoet

Re: Pager not showing for GridView

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