Problem Adding Column Programatically to GridView

Kbalz

I have a user control that has a gridview in it. I am dynamically
setting up its datasource and columns based on an XML file.

I have everything done except adding columns to the gridview, so that
the user only sees certain columns based on the XML file.

In my ASCX page I simply defined the gridview

<asp:GridView ID="gvSearchRes ults" HorizontalAlign ="Center"
AllowSorting="t rue" runat="server"
Width="100%" Visible="true"
AutoGenerateCol umns="false" ForeColor="Blac k"
OnRowCommand="g vSearchResults_ RowCommand">
<HeaderStyle
HorizontalAlign ="Center" Font-Size="Small" />
<RowStyle HorizontalAlign ="Center"
Font-Size="Smaller" />
<EditRowStyle
HorizontalAlign ="Center" Font-Size="Smaller" /><EmptyDataRowS tyle Font-
Bold="True" Font-Size="Medium" ForeColor="Red"
HorizontalAlign ="Center"
VerticalAlign=" Middle"
Height="80px" BackColor="#EEE EEE" />
<EmptyDataTempl ate>
No Results...
</EmptyDataTempla te>
</asp:GridView>
I also have a button, that when clicked, checks the XML file, and
builds the query string, and adds columns to the gridview.. so in the
code behind I have this

gvSearchResults .Columns.Clear( );

BoundColumn columnToAdd = new BoundColumn();
columnToAdd.Dat aField = dataSourceName;
columnToAdd.Hea derText = dataSourceHeade rName;
gvSearchResults .Columns.Add(co lumnToAdd);

But I get this overload error:

CS1502: The best overloaded method match for
'System.Web.UI. WebControls.Dat aControlFieldCo llection.Add(Sy stem.Web.UI.Web Controls.DataCo ntrolField)'
has some invalid arguments

Every example I check on line says those four lines of code is all
that is needed to dynamically add columns.. what gives..??

http://www.gridviewguy.com/ArticleDe...x?articleID=88
http://www.dotnetbips.com/articles/5...f38222bcb.aspx
http://aspalliance.com/785

Oct 4 '07 #1

Subscribe Reply

3123

Teemu Keiski

Hi,

GridView does not have BoundColumn, it has BoundField objects.

BoundField columnToAdd = new BoundField();
//...

and so on

--
Teemu Keiski
AspInsider, ASP.NET MVP
http://blogs.aspadvice.com/joteke
http://teemukeiski.net

"Kbalz" <Ku************ @gmail.comwrote in message
news:11******** **************@ g4g2000hsf.goog legroups.com...

>I have a user control that has a gridview in it. I am dynamically
setting up its datasource and columns based on an XML file.

I have everything done except adding columns to the gridview, so that
the user only sees certain columns based on the XML file.

In my ASCX page I simply defined the gridview

<asp:GridView ID="gvSearchRes ults" HorizontalAlign ="Center"
AllowSorting="t rue" runat="server"
Width="100%" Visible="true"
AutoGenerateCol umns="false" ForeColor="Blac k"
OnRowCommand="g vSearchResults_ RowCommand">
<HeaderStyle
HorizontalAlign ="Center" Font-Size="Small" />
<RowStyle HorizontalAlign ="Center"
Font-Size="Smaller" />
<EditRowStyle
HorizontalAlign ="Center" Font-Size="Smaller" /><EmptyDataRowS tyle Font-
Bold="True" Font-Size="Medium" ForeColor="Red"
HorizontalAlign ="Center"
VerticalAlign=" Middle"
Height="80px" BackColor="#EEE EEE" />
<EmptyDataTempl ate>
No Results...
</EmptyDataTempla te>
</asp:GridView>
I also have a button, that when clicked, checks the XML file, and
builds the query string, and adds columns to the gridview.. so in the
code behind I have this

gvSearchResults .Columns.Clear( );

BoundColumn columnToAdd = new BoundColumn();
columnToAdd.Dat aField = dataSourceName;
columnToAdd.Hea derText = dataSourceHeade rName;
gvSearchResults .Columns.Add(co lumnToAdd);

But I get this overload error:

CS1502: The best overloaded method match for
'System.Web.UI. WebControls.Dat aControlFieldCo llection.Add(Sy stem.Web.UI.Web Controls.DataCo ntrolField)'
has some invalid arguments

Every example I check on line says those four lines of code is all
that is needed to dynamically add columns.. what gives..??

http://www.gridviewguy.com/ArticleDe...x?articleID=88
http://www.dotnetbips.com/articles/5...f38222bcb.aspx
http://aspalliance.com/785

Oct 4 '07 #2

Kbalz

On Oct 4, 12:22 pm, "Teemu Keiski" <jot...@aspalli ance.comwrote:

Hi,

GridView does not have BoundColumn, it has BoundField objects.

BoundField columnToAdd = new BoundField();
//...

and so on

--
Teemu Keiski
AspInsider, ASP.NET MVPhttp://blogs.aspadvice .com/jotekehttp://teemukeiski.net

"Kbalz" <Kurtas.Balc... @gmail.comwrote in message

news:11******** **************@ g4g2000hsf.goog legroups.com...

I have a user control that has a gridview in it. I am dynamically
setting up its datasource and columns based on an XML file.

I have everything done except adding columns to the gridview, so that
the user only sees certain columns based on the XML file.

In my ASCX page I simply defined the gridview

<asp:GridView ID="gvSearchRes ults" HorizontalAlign ="Center"
AllowSorting="t rue" runat="server"
Width="100%" Visible="true"
AutoGenerateCol umns="false" ForeColor="Blac k"
OnRowCommand="g vSearchResults_ RowCommand">
<HeaderStyle
HorizontalAlign ="Center" Font-Size="Small" />
<RowStyle HorizontalAlign ="Center"
Font-Size="Smaller" />
<EditRowStyle
HorizontalAlign ="Center" Font-Size="Smaller" /><EmptyDataRowS tyle Font-
Bold="True" Font-Size="Medium" ForeColor="Red"
HorizontalAlign ="Center"
VerticalAlign=" Middle"
Height="80px" BackColor="#EEE EEE" />
<EmptyDataTempl ate>
No Results...
</EmptyDataTempla te>
</asp:GridView>

I also have a button, that when clicked, checks the XML file, and
builds the query string, and adds columns to the gridview.. so in the
code behind I have this

gvSearchResults .Columns.Clear( );

BoundColumn columnToAdd = new BoundColumn();
columnToAdd.Dat aField = dataSourceName;
columnToAdd.Hea derText = dataSourceHeade rName;
gvSearchResults .Columns.Add(co lumnToAdd);

But I get this overload error:

CS1502: The best overloaded method match for
'System.Web.UI. WebControls.Dat aControlFieldCo llection.Add(Sy stem.Web.UI..We b*Controls.Data ControlField)'
has some invalid arguments

Every example I check on line says those four lines of code is all
that is needed to dynamically add columns.. what gives..??

http://www.gridviewguy.com/ArticleDe...x?articleID=88
http://www.dotnetbips.com/articles/5...6ad-cd4f38222b...
http://aspalliance.com/785- Hide quoted text -

- Show quoted text -

Ah I've been naming all of my variables "column" so that lead me to
BoundColumn!! Thanks, that fixed it instantly.

Oct 4 '07 #3

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