How to implement conditional formatting in a GridView

Question

I have a GridView on my aspx page which displays a collection of objects defined by the following class

public class Item
{
    public string ItemName{get; s         


        

Answer 1

Not sure if you can use a BoundField, but if you change it to a TemplateField you could use a formatting function like in this link.

ie something like

<%# FormatDataValue(DataBinder.Eval(Container.DataItem,"ItemValue")) %>

Then in your codebehind, you can add a Protected Function

Protected Function FormatDataValue(val as object) As String
    'custom enter code hereformatting goes here
End Function

Or you could do something in the OnRowCreated event of the gridview, like in this link

this function is conditional formatting based on whether or not the datavalue is null/is a double

protected void OnRowCreated(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        DataRowView drv = e.Row.DataItem as DataRowView;
        Object ob = drv["ItemValue"];


        if (!Convert.IsDBNull(ob) )
        {
            double dVal = 0f;
             if (Double.TryParse(ob.ToString(), out dVal))
             {
                 if (dVal > 3f)
                 {
                     TableCell cell = e.Row.Cells[1];
                     cell.CssClass = "heavyrow";
                     cell.BackColor = System.Drawing.Color.Orange;
                 }
             }
        }
    }
}