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extracting selected rows from 1st grid to 2d grid

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Taeho Yoo
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Taeho Yoo asked on 15 Jul 2008, 05:04 AM
Hi,

I have two grids. The first grid has a checkbox column and when the checkbox is checked, the corresponding row should be added to the second grid.
I have tried http://www.telerik.com/community/forums/thread/b311D-ekbdh.aspx

But in the example, button triggers the method where selected items get moved but in my case, I need to use the embedded checkbox column to move a selected row but the second grid doesn't get populated after the method where a selected row gets moved. but a strange thing is that when I click a column heading as if sorting then all of sudden the records show up in the second radgrid.

here is my code,

My first grid
<radG:RadGrid   
                            ID="RadGrid_QueryComments" 
                            EnableAJAX="true"   
                            runat="server"   
                            OnNeedDataSource="RadGrid_QueryComments_NeedDataSource"   
                            Title="Double Click on the comment template to Select it.">  
                            <PagerStyle Mode="NumericPages"></PagerStyle> 
                            <MasterTableView Width="100%" DataKeyNames="commentNo" GroupLoadMode="Client">  
                                                                               
                                <Columns> 
                                    <radG:GridTemplateColumn HeaderText="Select">  
                                        <ItemTemplate> 
                                            <asp:CheckBox runat="server" Text='<%# Eval("commentNo") %>' AutoPostBack="true" OnCheckedChanged="ckbSelectedCommentTemplate_CheckedChanged" ID="ckbSelectedCommentTemplate" /> 
                                        </ItemTemplate> 
                                    </radG:GridTemplateColumn> 

The second Grid
<radG:RadGrid ID="RadGrid_SelectedCommentNos"   
                                    EnableAJAX="true" 
                                    AllowSorting="true"   
                                    AllowPaging="true"   
                                    AllowMultiRowSelection="true"   
                                    runat="server" 
                                    OnNeedDataSource="RadGrid_SelectedCommentNos_NeedDataSource">  
                                    <ClientSettings ApplyStylesOnClient="true">  
                                        <Selecting AllowRowSelect="true" /> 
                                    </ClientSettings> 
                                </radG:RadGrid> 

NeedDataSource Methods
protected void RadGrid_QueryComments_NeedDataSource(object source, Telerik.WebControls.GridNeedDataSourceEventArgs e)  
    {  
        ((RadGrid)source).DataSource = this.commentTemplates;  
    }  
 
    protected void RadGrid_SelectedCommentNos_NeedDataSource(object source, Telerik.WebControls.GridNeedDataSourceEventArgs e)  
    {  
        RadGrid_SelectedCommentNos.DataSource = this.selectedCommentTemplates;  
    } 

commentTemplates and selectedCommentTemplates properties
    public DataTable commentTemplates  
    {  
        get  
        {  
            object res = this.ViewState["commentTemplates"];  
            if (res != null)  
            {  
                return (DataTable)res;  
            }  
 
            // I am just showing pseudocode here  
            // get default records  
            // save into ViewState["commentTemplates"]  
            // finally   
            return theResult;  
        }  
    }  
      
 
    public DataTable selectedCommentTemplates  
    {  
        get  
        {  
            object res = this.ViewState["selectedCommentTemplates"];  
            if (res != null)  
            {  
                return (DataTable)res;  
            }  
            else  
            {  
                // get default value  
                // insert into ViewState["selectedCommentTemplates"] 
                // return theResults  
            }  
        }  
        set   
        {  
            ViewState["selectedCommentTemplates"] = value;  
        }  
    }  
 
 

Lastly checkbox serverside event
    protected void ckbSelectedCommentTemplate_CheckedChanged(object sender, EventArgs e)  
    {  
        DataSet selectedCommentTemplateData = new DataSet();  
        DataTable existingData = selectedCommentTemplates;  
 
        if (((CheckBox)sender).Checked)  
        {  
            // fill selectedCommentTemplateData with this selected record  
            existingData.Merge(selectedCommentTemplateData.Tables[0]);  
            selectedCommentTemplates = existingData;  
        }  
        else  
        {  
            existingData.Rows.Remove(commentTemplates.Select("commentNo=" + ((CheckBox)sender).Text)[0]);  
            selectedCommentTemplates = existingData;  
        }  
 
        RadGrid_SelectedCommentNos.Rebind();  
    } 

Thank you in advance,

Toby

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Veli
Telerik team
answered on 16 Jul 2008, 11:20 AM
Hello Taeho,

Please find attached a reworked version of the sample project that you examined in the posted forum article. Two RadGrids are defined on the page with a GridTemplateColumn and a CheckBox. Clicking the checkboxes moves the grid items back and forth between the two grids.

Please see how this relates to your case.

Kind regards,
Veli
the Telerik team

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Taeho Yoo
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Veli
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