How to bind a class object into grid view through a different class object?

Question

I have 2 classes:

public class clsShipper 
{
    public string ShipperName { get; set; }
}

and

public class clsJobInfo 
{
    public long JobID { get; set; }

    public clsShipper oShipper = new clsShipper();
}

My GridView is as follows

<asp:GridView ID="dgvJobCostList" runat="server" CellPadding="4" ForeColor="#333333" style="font-family:Verdana;font-size:10px;" AutoGenerateColumns="False" OnSelectedIndexChanged="dgvJobCostList_SelectedIndexChanged">
    <RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
    <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
    <PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
    <SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
    <HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
    <EditRowStyle BackColor="#999999" />
    <AlternatingRowStyle BackColor="White" ForeColor="#284775" />
    <Columns>
        <asp:TemplateField>
            <ItemTemplate>
                <asp:CheckBox ID="chkRowCheck" runat="server" />
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="ID">
            <ItemTemplate>
                <asp:Label ID="lblJobID" runat="server" Text='<%# Bind("JobID") %>' />
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Shipper">
            <ItemTemplate>
            <asp:Label ID="lblShipperName" runat="server" Text='<%# Bind("ShipperName") %>' />
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

I am trying to bind the ShipperName property of Shipper Class through the JobInfo Class object. I tried below

protected void btnSearch_Click(object sender, EventArgs e)
{
    if (oOutputJobInfo.Length < 1)
    {
        lblMessage.Text = "Error : No Data Found";
        lblMessage.Visible = true;
        return;
    }
    else
    {
        dgvJobCostList.DataSource = oOutputJobInfo;
        dgvJobCostList.DataBind();
        dgvJobCostList.Visible = true;
    }
}

But gives below error

DataBinding: 'Nucleus.BOL.clsJobInfo' does not contain a property with the name 'ShipperName'.

also tried this <asp:Label ID="lblShipperName" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Shipper.ShipperName") %>'></asp:Label> instead of <asp:Label ID="lblShipperName" runat="server" Text='<%# Bind("ShipperName") %>'></asp:Label> but no luck — vpv
– vpv, Commented May 21, 2012 at 11:28
@abatishchev, yeh ! But this is the convention my office follows. Not able to change it. :( — vpv
– vpv, Commented May 21, 2012 at 11:50
@abatishchev - Right, because it breaks the compiler. The developer can prefix with foo, bar, boo, cls, my or whatever as long as they can read it and it's the standard they have chosen for their team. — Chris Gessler
– Chris Gessler, Commented May 21, 2012 at 11:59

Chris Gessler · Accepted Answer · 2012-05-21 12:08:09Z

2

Import the namespace like so:

<%@ Import namespace="MyNamespace.ToclsJobInfo" %>

And you might need the namespace to clsShipper if different than clsJobInfo

Then you can cast/unbox clsJobInfo and use the property oShipper

<asp:TemplateField HeaderText="Shipper">    
  <ItemTemplate>    
    <asp:Label ID="lblShipperName" runat="server" Text='<%# ((clsJobInfo)Container.DataItem).oShipper.ShipperName %>' />    
  </ItemTemplate>  
</asp:TemplateField>

edited May 21, 2012 at 12:08

answered May 21, 2012 at 11:37

Chris Gessler

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4 Comments

vpv Over a year ago

I have tried this <asp:Label ID="lblShipperName" runat="server" Text='<%# DataBinder.Eval(((clsShipper)Container.DataItem).ShipperName) %>'></asp:Label> but it gives this compile time error Error 5 The type or namespace name 'clsShipper' could not be found (are you missing a using directive or an assembly reference?)

Chris Gessler Over a year ago

Also, I don't think you need DataBinder.Eval when unboxing.

Chris Gessler Over a year ago

@V.P.Verma - sorry, I had the class names backwards. I've updated my answer.

vpv Over a year ago

finally this solved the problem <asp:Label ID="lblShipperName" runat="server" Text='<%# ((clsJobInfo)Container.DataItem).oShipper.ShipperName %>'></asp:Label> Thanks to all of you :D The StackOverFlow guys rocks !!!

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