User475983607 posted
It is very difficult to follow your logic. When asking for help on a forum it is best if you provided enough code to reproduce the problem. Below is a working example based on the code you've provided.
<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="FormEx.aspx.vb" Inherits="WebFormsVBDemo.FormEx" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView1" runat="server"></asp:GridView>
</div>
</form>
</body>
</html>
Public Class Data
Public Property Id As Integer
Public Property Val As Decimal
End Class
Public Class FormEx
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If Not Page.IsPostBack Then
GridView1.DataSource = PopulateData()
GridView1.DataBind()
End If
FormatGridView()
End Sub
Protected Sub FormatGridView()
For Each row As GridViewRow In GridView1.Rows
Dim val As Decimal = Decimal.Parse(row.Cells(1).Text())
If val <= 0 Then
row.Cells(1).BackColor = Drawing.Color.Red
End If
If val > 0 And val < 60 Then
row.Cells(1).BackColor = Drawing.Color.Orange
End If
If val >= 60 Then
row.Cells(1).BackColor = Drawing.Color.Yellow
End If
Next
End Sub
Protected Function PopulateData() As List(Of Data)
Return New List(Of Data) From
{
New Data With {.Id = 1, .Val = -1280},
New Data With {.Id = 2, .Val = 33},
New Data With {.Id = 3, .Val = 5120},
New Data With {.Id = 4, .Val = 0}
}
End Function
End Class
