How to display image inside table(interface) in vb.net ?

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VB

If txt1.Text = "abc" Then
  txt2.Text = "11111"
End If

Dim sb As New StringBuilder
 For Each c as Char in txt2.Text
  sb.AppendFormat("<img src='{0}.jpg' />", c)
Next
  Literal1.Text = sb.ToString()

How I'm going to address Literal1.Text to execute that sb.ToString() inside a table. This is for interface only, not related with database.