ItemDataBound event in Multicolumn dropdown

[Neema Sridhar]

Hi,

 

I am implementing a multicolumn radcombo and I need to access indiviual column values. I saw from the demo that this can be acheived by setting attributes. and this I am trying to do in ItemDataBound event. But in ItemDatabound event e.Item.DataItem is null, Please have a look at the below code and let me know what could be the issue. The data is getting beinded to the drodown, but datatitem is null

ASPX CODe

 

<telerik:RadComboBox ID="RadComboBox1" runat="server" Width="150px"  HighlightTemplatedItems="true" CssClass="cmb_borderstyle"
                                        OnClientSelectedIndexChanged="onClientSelectedIndexChanged"
                                        DropDownWidth="200px" EnableEmbeddedSkins="false" Skin="NextGen" CausesValidation="false" OnItemDataBound="RadComboBox1_ItemDataBound">
                                            <CollapseAnimation Type="OutQuint" Duration="200"></CollapseAnimation>
                                            <ItemTemplate>
                                            <div class="cmb_ltFlt" style="width:100%">
                                                <div class="cmb_rdFnt cmb_ltFlt">
                                                    <%# DataBinder.Eval(Container.DataItem, "paymentTypeDesc") %>Item1</div>
                                                <div class="cmb_rdFnt cmb_ltFlt cmb_sp20">
                                                    <%# DataBinder.Eval(Container.DataItem, "delvOptionDesc")%>Row1 Col2</div>
                                                <div class="cmb_rdFnt cmb_ltFlt cmb_sp20">
                                                    <%# DataBinder.Eval(Container.DataItem, "serviceFQN") %>Row1 Col3</div>
                                                </div>

                                            </ItemTemplate>
                                        </telerik:RadComboBox>

C# Code

public class PaymentSelectionData 

    { 

        public string paymentTypeDesc { get; set; } 

        public string delvOptionDesc { get; set; } 

        public string serviceFQN { get; set; } 

        public string refVal { get; set; } 

    }
//Below logic is implemented in some method and called form PageLoad 

List<PaymentSelectionData> lstPmtSel = new List<PaymentSelectionData>(); 

    

for (int i = 1; i <= 5; i++) 

                    { 

                        pmtSelData = new PaymentSelectionData(); 

                        pmtSelData.paymentTypeDesc = "PaymentTypeDesc" + i.ToString(); 

                        pmtSelData.delvOptionDesc = "DelvOption" + i.ToString(); 

                        pmtSelData.serviceFQN = "ServiceFQN" + i.ToString(); 

                        pmtSelData.refVal = pmtSelData.paymentTypeDesc + "#" + pmtSelData.delvOptionDesc + "#" + pmtSelData.serviceFQN; 

                        lstPmtSel.Add(pmtSelData); 

    

} 

    

RadComboBox1.DataValueField = pmtSelData.refVal; 

                    RadComboBox1.DataTextField = "paymentTypeDesc"; 

    

                    RadComboBox1.DataSource = lstPmtSel; 

                    RadComboBox1.DataBind(); 

    

protected void RadComboBox1_ItemDataBound(object sender, RadComboBoxItemEventArgs e) 

        { 

            //row is null

            System.Data.DataRowView row = e.Item.DataItem as System.Data.DataRowView; 

}

 

 

public

 

class PaymentSelectionData

 

 

 

 

 

{

 

public string paymentTypeDesc { get; set; }

 

 

public string delvOptionDesc { get; set; }

 

 

public string serviceFQN { get; set; }

 

 

public string refVal { get; set; }

 

}

 

 

[Simon]

Hello Neema Sridhar,

The DataItem you are getting with the 'as' operator is null because the underlying type of the DataItem is PaymentSelectionData, i.e. it is not DataRowView. If you change the type then the code should work properly.

Greetings,
Simon
the Telerik team