How to custom format data in datagridview during databinding

Question

I\'m looking for a way to format DataGridViewTextBoxColumn so that the value to be databinded is formatted during databinding. For example I have a CompanyName property and

Answer 1

Here is what I did to get mine to work

public class MyFormatProvider : IFormatProvider, ICustomFormatter  
{  
   public object GetFormat(Type formatType)  
   {  
     if (formatType == typeof(ICustomFormatter))  
        return this;  
     else  
        return null;  
   }  

   public string Format(string format, object arg, IFormatProvider formatProvider)  
   {  
     // Check whether this is an appropriate callback               
     if (!this.Equals(formatProvider))  
        return null;  

     //if argument/ value is null we return empty string  
     if (arg == null)  
        return null;  

     string resultString = arg.ToString();  

     //transform resultString any way you want (could do operations based on given format parameter)  

     //return the resultant string  
     return resultString;  
   }  
}  

This is what i then put in my cell formatting handler

//In your datagridview, handle the cell formatting event in required cell as  
if (e.ColumnIndex == dgvPayments.Columns["amount"].Index)  
{  
  e.Value = String.Format(new MyFormatProvider (), "{0:U}", e.Value);  
  e.FormattingApplied = true;  
}