Dynamically changing a table cell background color in asp.net - asp.net

Question

I have the following table row on my .aspx page:
<tr>
<td valign="bottom" style="width: 157px">Initial Requirements: </td>
<asp:Repeater ID="Repeater11" runat="server" DataSourceID="ObjectDataSource1">
<ItemTemplate>
<td valign="bottom" id="ReqStatus" runat="server" style="background-color: Gray">
<%#ReqStatus(CType(CType(Container.DataItem, System.Data.DataRowView).Row, DataSet1.DataTable1Row))%>
</td>
</ItemTemplate>
</asp:Repeater>
</tr>
In the code behind I have this function:
Protected Function ReqStatus(ByVal Project As DataSet1.DataTable1Row) As String
'Dim ReqTableCell As TableCell
'ReqTableCell = form1.FindControl("ReqStatus")
' Check the status of the Development Completed
Dim rightNow As Date = Now()
Dim dateDifference As TimeSpan
If Not Project.IsNull("Requirements_Target") Then
Dim ReqTargetDate As Date = Project.Requirements_Target
If Project.IsNull("Req_Date") Then
dateDifference = ReqTargetDate.Subtract(rightNow)
If dateDifference.Days > 0 Then
If dateDifference.Days >= 60 Then
'ReqTableCell.BackColor = Drawing.Color.Green
Return "<strong><font color='green'>" & dateDifference.Days & "</font></strong>"
ElseIf dateDifference.Days > 30 And dateDifference.Days < 60 Then
'ReqTableCell.BackColor = Drawing.Color.Yellow
Return "<strong><font color='yellow'>" & dateDifference.Days & "</font></strong>"
Else
'ReqTableCell.BackColor = Drawing.Color.Red
Return "<strong><font color='red'>" & dateDifference.Days & "</font></strong>"
End If
Else
'ReqTableCell.BackColor = Drawing.Color.Red
Dim pastDue As Int16 = (dateDifference.Days * -1)
Return "<strong><font color='red'>" & pastDue & "</font></strong> days past"
End If
End If
Else
End If
End Function
I can change the color of the return value based on conditional statements but cannot figure out the correct syntax to change the table cell back ground. My attempt is commented out.
How do I correctly declare the table cell? Findcontrol must not be the correct way.

Answer 1

Look this snipping of my solution:
TableRow tr = new TableRow();
TableCell tc = new TableCell { Text = "someText"};
tc.BackColor = ColorTranslator.FromHtml("#0000FF");
tc.ForeColor = ColorTranslator.FromHtml("#FFFFFF");
tc.Font.Bold = true;
tc.Font.Size = 16;
tr.Cells.Add(tc);
table.Rows.Add(tr);
After doing this and controlling all statements you can render the table in web page.

Answer 2

You can do that in Codebehind with full control (untested, only to give you the idea):
Private Sub Repeater1_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.RepeaterItemEventArgs) Handles Repeater1.ItemDataBound
Select Case e.Item.ItemType
Case ListItemType.Item
Dim Project As DataSet1.DataTable1Row = DirectCast(DirectCast(e.Item.DataItem, System.Data.DataRowView).Row, DataSet1.DataTable1Row)
Dim tdReqStatus As HtmlTableCell = DirectCast(e.Item.FindControl("tdReqStatus"), HtmlTableCell)
Dim lblReqStatus As Label = DirectCast(e.Item.FindControl("lblReqStatus"), Label)
' Check the status of the Development Completed
Dim rightNow As Date = Now()
Dim dateDifference As TimeSpan
If Not Project.IsNull("Requirements_Target") Then
Dim ReqTargetDate As Date = Project.Requirements_Target
If Project.IsNull("Req_Date") Then
dateDifference = ReqTargetDate.Subtract(rightNow)
lblReqStatus.Font.Bold = True
If dateDifference.Days > 0 Then
If dateDifference.Days >= 60 Then
tdReqStatus.BgColor = "Green"
lblReqStatus.Text = dateDifference.Days.ToString
ElseIf dateDifference.Days > 30 And dateDifference.Days < 60 Then
tdReqStatus.BgColor = "Yellow"
lblReqStatus.Text = dateDifference.Days.ToString
Else
tdReqStatus.BgColor = "Red"
lblReqStatus.Text = dateDifference.Days.ToString
End If
Else
tdReqStatus.BgColor = "Red"
lblReqStatus.Text = (dateDifference.Days * -1).ToString
End If
End If
End If
End Select
End Sub
and on the aspx:
<table>
<asp:Repeater ID="Repeater1" runat="server">
<ItemTemplate>
<tr>
<td valign="bottom" id="TdReqStatus" runat="server" >
<asp:label ID="lblReqStatus" runat="server" ></asp:label>
</td>
</tr>
</ItemTemplate>
</asp:Repeater>
</table>