Set the input mask to that of a short time : MaskedTextBox : GUI Windows Forms C# Examples

    
using  System;
using  System.Threading;
using  System.Windows.Forms;

public  class  MaskedTextBoxShortTimeFormDemo{
        [STAThread]
        public  static  void  Main(string[]  args)
        {
                Application.Run(new  MaskedTextBoxShortTimeForm());
        }
}

public  partial  class  MaskedTextBoxShortTimeForm  :  Form
{

        public  MaskedTextBoxShortTimeForm()
        {
                InitializeComponent();
        }

        private  void  btnTime_Click(object  sender,  EventArgs  e)
        {
                this.mskTextBox.UseSystemPasswordChar  =  false;
                this.mskTextBox.Mask  =  "00:00";
                this.lblActiveMask.Text  =  this.mskTextBox.Mask;
                this.mskTextBox.Focus();
        }

        private  void  btnUSZip_Click(object  sender,  EventArgs  e)
        {
        }

        private  void  btnUKPost_Click(object  sender,  EventArgs  e)
        {
        }

        private  void  btnCurrency_Click(object  sender,  EventArgs  e)
        {
        }

        private  void  btnDate_Click(object  sender,  EventArgs  e)
        {
        }

        private  void  btnSecret_Click(object  sender,  EventArgs  e)
        {
        }

}
partial  class  MaskedTextBoxShortTimeForm
{
        private  System.ComponentModel.IContainer  components  =  null;

        protected  override  void  Dispose(bool  disposing)
        {
                if  (disposing  &&  (components  !=  null))
                {
                        components.Dispose();
                }
                base.Dispose(disposing);
        }

        private  void  InitializeComponent()
        {
                this.mskTextBox  =  new  System.Windows.Forms.MaskedTextBox();
                this.label1  =  new  System.Windows.Forms.Label();
                this.lblActiveMask  =  new  System.Windows.Forms.Label();
                this.btnTime  =  new  System.Windows.Forms.Button();
                this.btnUSZip  =  new  System.Windows.Forms.Button();
                this.btnCurrency  =  new  System.Windows.Forms.Button();
                this.btnUKPost  =  new  System.Windows.Forms.Button();
                this.btnDate  =  new  System.Windows.Forms.Button();
                this.btnSecret  =  new  System.Windows.Forms.Button();
                this.SuspendLayout();

                this.mskTextBox.BeepOnError  =  true;
                this.mskTextBox.Location  =  new  System.Drawing.Point(15,  41);
                this.mskTextBox.Name  =  "mskTextBox";
                this.mskTextBox.Size  =  new  System.Drawing.Size(265,  20);
                this.mskTextBox.TabIndex  =  1;

                this.label1.AutoSize  =  true;
                this.label1.Location  =  new  System.Drawing.Point(12,  23);
                this.label1.Name  =  "label1";
                this.label1.Size  =  new  System.Drawing.Size(94,  13);
                this.label1.TabIndex  =  2;
                this.label1.Text  =  "Active  input  mask:";

                this.lblActiveMask.AutoSize  =  true;
                this.lblActiveMask.Location  =  new  System.Drawing.Point(112,  23);
                this.lblActiveMask.Name  =  "lblActiveMask";
                this.lblActiveMask.Size  =  new  System.Drawing.Size(51,  13);
                this.lblActiveMask.TabIndex  =  3;
                this.lblActiveMask.Text  =  "Any  input";

                this.btnTime.Location  =  new  System.Drawing.Point(15,  85);
                this.btnTime.Name  =  "btnTime";
                this.btnTime.Size  =  new  System.Drawing.Size(83,  23);
                this.btnTime.TabIndex  =  4;
                this.btnTime.Text  =  "24-hour  time";
                this.btnTime.UseVisualStyleBackColor  =  true;
                this.btnTime.Click  +=  new  System.EventHandler(this.btnTime_Click);

                this.btnUSZip.Location  =  new  System.Drawing.Point(15,  130);
                this.btnUSZip.Name  =  "btnUSZip";
                this.btnUSZip.Size  =  new  System.Drawing.Size(83,  23);
                this.btnUSZip.TabIndex  =  5;
                this.btnUSZip.Text  =  "US  ZIP";
                this.btnUSZip.UseVisualStyleBackColor  =  true;
                this.btnUSZip.Click  +=  new  System.EventHandler(this.btnUSZip_Click);

                this.btnCurrency.Location  =  new  System.Drawing.Point(104,  85);
                this.btnCurrency.Name  =  "btnCurrency";
                this.btnCurrency.Size  =  new  System.Drawing.Size(87,  23);
                this.btnCurrency.TabIndex  =  7;
                this.btnCurrency.Text  =  "Currency";
                this.btnCurrency.UseVisualStyleBackColor  =  true;
                this.btnCurrency.Click  +=  new  System.EventHandler(this.btnCurrency_Click);

                this.btnUKPost.Location  =  new  System.Drawing.Point(104,  130);
                this.btnUKPost.Name  =  "btnUKPost";
                this.btnUKPost.Size  =  new  System.Drawing.Size(87,  23);
                this.btnUKPost.TabIndex  =  8;
                this.btnUKPost.Text  =  "UK  Postcode";
                this.btnUKPost.UseVisualStyleBackColor  =  true;
                this.btnUKPost.Click  +=  new  System.EventHandler(this.btnUKPost_Click);

                this.btnDate.Location  =  new  System.Drawing.Point(197,  85);
                this.btnDate.Name  =  "btnDate";
                this.btnDate.Size  =  new  System.Drawing.Size(83,  23);
                this.btnDate.TabIndex  =  10;
                this.btnDate.Text  =  "Short  Date";
                this.btnDate.UseVisualStyleBackColor  =  true;
                this.btnDate.Click  +=  new  System.EventHandler(this.btnDate_Click);

                this.btnSecret.Location  =  new  System.Drawing.Point(197,  130);
                this.btnSecret.Name  =  "btnSecret";
                this.btnSecret.Size  =  new  System.Drawing.Size(83,  23);
                this.btnSecret.TabIndex  =  11;
                this.btnSecret.Text  =  "Secret  PIN";
                this.btnSecret.UseVisualStyleBackColor  =  true;
                this.btnSecret.Click  +=  new  System.EventHandler(this.btnSecret_Click);

                this.AutoScaleDimensions  =  new  System.Drawing.SizeF(6F,  13F);
                this.AutoScaleMode  =  System.Windows.Forms.AutoScaleMode.Font;
                this.ClientSize  =  new  System.Drawing.Size(292,  196);
                this.Controls.Add(this.btnSecret);
                this.Controls.Add(this.btnDate);
                this.Controls.Add(this.btnUKPost);
                this.Controls.Add(this.btnCurrency);
                this.Controls.Add(this.btnUSZip);
                this.Controls.Add(this.btnTime);
                this.Controls.Add(this.lblActiveMask);
                this.Controls.Add(this.label1);
                this.Controls.Add(this.mskTextBox);
                this.Name  =  "MaskedTextBoxShortTimeForm";
                this.Text  =  "MaskedTextBoxShortTimeForm";
                this.ResumeLayout(false);
                this.PerformLayout();

        }
        private  System.Windows.Forms.MaskedTextBox  mskTextBox;
        private  System.Windows.Forms.Label  label1;
        private  System.Windows.Forms.Label  lblActiveMask;
        private  System.Windows.Forms.Button  btnTime;
        private  System.Windows.Forms.Button  btnUSZip;
        private  System.Windows.Forms.Button  btnCurrency;
        private  System.Windows.Forms.Button  btnUKPost;
        private  System.Windows.Forms.Button  btnDate;
        private  System.Windows.Forms.Button  btnSecret;
}