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Adding Control(checkBox) in RadGrid

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Dip
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Dip asked on 08 Nov 2008, 04:43 AM
I Have a RadGrid with some field null and some field boolean Value...I have to add control in cetain Cell of RaDGrid....
Protected void RadGrid1_ItemDataBound(object sender,GridItemEventArgs e)
{
     if(e.item.is GridDataItem)
         {
                    DataRowView Rv=(DataRowView)e.Item.DataItem;
                    (Now ...)

          }
}

Till Now I can Access Row of the Grid..Now I have to Access Cell so that I can add control
eg: cell.control.add(CheckBox)..some like this...

Thanks,
DIP

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Princy
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answered on 10 Nov 2008, 05:23 AM
Hello,

You can try out the following code to add a control to a cell based on a condition. Cells can be accessed by using the column UniqueName property for columns.

cs:
protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e) 
    { 
        if (e.Item is GridDataItem) 
        { 
            GridDataItem dataItem = (GridDataItem)e.Item; 
            CheckBox check = new CheckBox(); 
            check.ID = "CheckBox1"
            //if condition is met then            
            dataItem["ColumnUniqueName"].Controls.Add(check); 
             
        } 
     } 

Thanks
Princy.
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Dip
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answered on 10 Nov 2008, 09:54 PM
that is COOL...

But is there a better way of doing it.....What I was looking for is to come up with column indexes rather than column name ...
If there a a way Please have a sample code on this post...


thanks,
DIP
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Shinu
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answered on 11 Nov 2008, 06:21 AM
Hi Dip,

Try adding the CheckBox to the desired cell as shown below.

CS:
 protected void RadGrid1_ItemDataBound(object sender, Telerik.Web.UI.GridItemEventArgs e) 
    { 
        if (e.Item is GridDataItem) 
        { 
            GridDataItem dataItem = (GridDataItem)e.Item; 
             
            CheckBox check = new CheckBox(); 
            check.ID = "CheckBox1"
            // check for the condition
            if (e.Item.Cells[2].Text == "MyText") 
                e.Item.Cells[2].Controls.Add(check); 
 
        }  
    } 

Using indexes to access individual cells in the Cells collection of a row is not a reliable method of obtaining a cell in a particular column.
The index of individual columns can change on the client on  column reordering and grouping.The reliable way of locating the cell in a particular column
is using the UniqueName property of a column.

Thanks
Shinu.
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Dip
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answered on 11 Nov 2008, 11:54 PM
Thanks ..

Well, that still doesn't solve my problem...Let me brief it to you and may be you can give me a better solution...I am freaking out..
I have a DataTable that is in this structure..
Resource          View        Modify      
------------------------------------------
Network             true          false
Revenue                           false
Status               false        

Network             true          false


which I bind to RadGrid ..Place where states "true" I need a checkBox with checked .."False" needs CheckBox with unchecked and null is Label...I am checking this on DataItemBound using the idea stated by you..But the only reason i wanted it to do with index was because I have about 16 columns.....How can I iterate and just do it once?

Now the user can check and uncheck the checkBox...Which is also ok.... now the problem comes when use Click a button and I have to update all the checkboxes...
1) I have to Access each cell in the RadGrid + header("View/Modify") +Col1(Network/Revenue/Status) to update in datatable
2) I don't seem to find checkbox in the cells...
-----------------------Used-----------------------
RadGrid Grid=this.FindControl("RadGrid1") as RadGrid;
Grid.Cells[1].Findcontrol("Chk") as CheckBox;  (I don't seems to find CheckBox)..


Thanks,
A ton....DIP 
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Shinu
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answered on 12 Nov 2008, 06:21 AM
Hi Dip,

One suggestion will be use GridTemplateColumn with a CheckBox in its ItemTemplate and bind its DataField to 'View' /  'Modify' . You can set the View / modify field as the DataKeyName and depending on its value you can set the  Checked/Visible property of the CheckBox in the ItemDataBound event.

ASPX:
 <telerik:GridTemplateColumn UniqueName="View"  HeaderText="View"  DataField="View" > 
      <ItemTemplate> 
          <asp:CheckBox ID="CheckBox1"    runat="server" /> 
      </ItemTemplate> 
    </telerik:GridTemplateColumn> 

//To set the DataKeyName
<MasterTableView DataSourceID="SqlDataSource1" DataKeyNames="View"    > 
  


CS:
 protected void RadGrid1_ItemDataBound(object sender, Telerik.Web.UI.GridItemEventArgs e) 
    { 
        if (e.Item is GridDataItem) 
        { 
            GridDataItem item = (GridDataItem)e.Item; 
            CheckBox chkbx = (CheckBox)item["View"].FindControl("CheckBox1"); 
            string key = item.GetDataKeyValue("View").ToString(); 
            if (key == "True") 
                chkbx.Checked = true
            else if (key == "False") 
                chkbx.Checked = false
            else 
            { 
                //to hide the CheckBox when the value is null 
                chkbx.Visible = false
                //to add a label  
                Label lbl = new Label(); 
                lbl.ID = "Label2"
                lbl.Text = "Empty"
                item["View"].Controls.Add(lbl); 
            } 
        } 
        
    } 


//to access the CheckBox in the Button click event.
protected void Button1_Click(object sender, EventArgs e) 
    { 
        foreach (GridDataItem item in RadGrid1.MasterTableView.Items) 
        { 
            CheckBox chkbx = (CheckBox)item["View"].FindControl("CheckBox1"); 
        } 
        
    } 


Thanks
Shinu
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Dip
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answered on 13 Nov 2008, 01:15 AM
Thanks Shinu,
I can't use that because DataKeyValue is related to one column and to access other value I have to connect to database again...
Anyway I figured out a way which is primitive, but works like a charm....

Got the numver of item and got the number of cells..
Item represents -- Row
cells represent ---Column
then I iterate with 2 for loops..
RadGrid1.MasterTableView.Items[Row_Index].Cells[Column_Index].Text....

But Thanks for all the replys

Thanks,
DIP
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Shinu
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answered on 13 Nov 2008, 06:18 AM
Hi Dip,

I would like to let you know that you can set more than one field as the  key value in the DataKeyNames array.

ASPX:
<MasterTableView DataSourceID="SqlDataSource1" DataKeyNames="View, Modify"    >  

Regards
Shinu.
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Dip
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answered on 13 Nov 2008, 08:16 PM
You see ..You should have given this hint long time ago....I implemented exactly the way you told me and is pity good in Shape...

thanks,
DIP
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