How i change custom input in TextEdit Devexpress

Question

I have the TextEdit with properties max value = 6, the default value is "000000" and i will replace the value according to user input. For example when user input "69" in TextEdit, the final value TextEdit to be "000069". How i prepare that using c# ?

Please help me to prepare that...

Answer 1

Use the Edit Mask on TextEdit control. To achieve required functionality you can set the TextEdit.Properties.Mask.MaskType property to to Simple and set the TextEdit.Properties.Mask.EditMask property to "000000".

Go through documentation - Mask Editors Overview

To enable the Simple masked mode set the MaskProperties.MaskType property of the RepositoryItemTextEdit.Mask object to MaskType.Simple . The mask itself should be specified via the MaskProperties.EditMask property.

Example:

textEdit1.Properties.Mask.EditMask = "000000";
textEdit1.Properties.Mask.UseMaskAsDisplayFormat = true;
textEdit1.Properties.Mask.MaskType = DevExpress.XtraEditors.Mask.MaskType.Simple;

If you do not want to mask the editor control then go for Formatting , Here is an example:
How to: Add Custom Text to a Formatted String

textEdit1.Properties.DisplayFormat.FormatType = DevExpress.Utils.FormatType.Numeric;
textEdit1.Properties.DisplayFormat.FormatString = "{0:d6}";

Hope this help

Answer 2

Try this (add EditValueChanging event handler to your text edit):

    private void textEdit_EditValueChanging(object sender, DevExpress.XtraEditors.Controls.ChangingEventArgs e)
    {
        const int MaxLength = 6;
        var editor = (DevExpress.XtraEditors.TextEdit)sender;

        if (e.NewValue != null)
        {
            var s = (string)e.NewValue;
            s = s.TrimStart('0');

            if (string.IsNullOrWhiteSpace(s) == false)
            {
                BeginInvoke(new MethodInvoker(delegate
                {
                    editor.Text = s.Substring(0, Math.Min(s.Length, MaxLength)).PadLeft(MaxLength, '0');
                    editor.SelectionStart = MaxLength;
                }));
            }
        }
    }