>This generates no errors, but the cell just shows a red X.
>
>

>    private void OnDataGridViewCellFormat(object sender, DataGridViewCellFormattingEventArgs e)
>      {
>      if (this.dataGridView.Columns[e.ColumnIndex].Name == "imgType")
>        {
>        System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(cdsMessages));
>        int iRow = e.RowIndex;
>        if (cdsMessageDataSet.Messages[iRow].msgtype == "E")
>          {
>          e.Value = ((System.Drawing.Bitmap)(resources.GetObject("Work.bmp")));
>          }
>        else
>          {
>          e.Value = ((System.Drawing.Bitmap)(resources.GetObject("PhoneCall.bmp")));
>          }
>        }
>      }
>
>

>
>I suspect either a wrong argument here:
>
>ResourceManager(typeof(cdsMessages));
>
>or a missing path here:
>
>GetObject("Work.bmp")
>
>But not sure what it should be??
>
>The 2 BMPs are in my Resources folder and marked as Embedded Resource under build action.

John,
Though it looks like a very silly thing to do, looks like ResourceManager.GetObject(string) is doing a case sensitive reflection to find the resource. IOW:

//This might work:
ResourceManager.GetObject("RESOURCE");
//while this one fail:
ResourceManager.GetObject("Resource");

Might not be silly OTOH thinking it creates internal static properties for them.
BTW do not use filename but resource name. ie:

WORK  c:\....\work.bmp
PHONE c:\....\phone.bmp

Cetin