Hi Karthik, 

Our Masked Editor has the ability to add mask in hh:mm:ss or hh:mm tt, where tt is the token for AM/PM, adding milliseconds token to Masked Editor input mask will be a new product idea. Alternatively you can use UltraTimeSpan Editor to set specific TimeSpan including milliseconds. It supports rendering values of type System.TimeSpan and I assume this is what you are looking for.  

 If you have to use UltraMaskedEditor only, then you can add milliseconds by using a DataFilter which allows you to save fractions of time and then display them back in the editor. You can extract the ## characters value using a DataFilter from your editor and save them to your cell value, by using EditorToOwner. Similarly, you can extract the milliseconds from the cell’s value, and set the text of the editor with the constructed value by using OwnerToEditor.  You can refer to the following link to read more about DataFilter.

http://devcenter.infragistics.com/Support/KnowledgeBaseArticle.aspx?ArticleID=5014

The initial framework for it is below:  

private void Form1_Load(object sender, EventArgs e)
        {
            ultraGrid1.DataSource = BuildData(new int[] { 10 });
           
            uwg.UltraGridColumn colTime = this.ultraGrid1.DisplayLayout.Bands[0].Columns["datetime1"];

            UltraMaskedEdit edMask = new UltraMaskedEdit();
            edMask.InputMask = "hh:mm:ss.##";
            edMask.DataFilter = new MaskToTimeSpan();
        }

        public class MaskToTimeSpan : IEditorDataFilter
        {
            public object Convert(EditorDataFilterConvertArgs conversionArgs)
            {
                DateTime dtIn = (DateTime)conversionArgs.Value;

                string sMS = string.Empty;
                switch (conversionArgs.Direction)
                {
                    case ConversionDirection.DisplayToEditor:
                        break;
                    case ConversionDirection.EditorToDisplay:
                        break;
                    case ConversionDirection.OwnerToEditor:
                        break;
                    case ConversionDirection.EditorToOwner:
                        break;
                }

                return dtIn;
            }
        }

Please let me know what approach you would like to take and I can help you with that. If you want to suggest this as product idea then, you can suggest new product ideas for future versions (or vote for existing ones) at <http://ideas.infragistics.com>. 

Submitting your idea will allow you to communicate directly with our product management team, track the progress of your idea at any time, see how many votes it got, read comments from other developers in the community, and see if someone from the product team has additional questions for you. 

Remember when submitting your idea to explain the context in which a feature would be used and why it is needed as well as anything that would prevent you from accomplishing this today. You can even add screenshots to build a stronger case. Remember that for your suggestion to be successful, you need other members of the community to vote for it.  You can also link back to this thread for additional details.

Thank you in advance to submitting your product idea. 

Sincerely,

Sahaja Kokkalagadda

Associate Software Developer, Windows Forms

http://es.infragistics.com/