Csharp/C Sharp by API/System/DayOfWeek

DayOfWeek.Friday

<source lang="csharp"> using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; public class Form1 : Form {

   private System.Windows.Forms.DateTimePicker dateTimePickerDropOff;
   private System.Windows.Forms.Label outputLabel;
   private System.Windows.Forms.Label deliveryLabel;
   private System.Windows.Forms.Label dropOffLabel;
   public Form1() {
       InitializeComponent();
       dateTimePickerDropOff.MinDate = DateTime.Today;
       dateTimePickerDropOff.MaxDate = DateTime.Today.AddYears( 1 );
 }
  private void dateTimePickerDropOff_ValueChanged( object sender, EventArgs e )
  {
     DateTime dropOffDate = dateTimePickerDropOff.Value;
     if ( dropOffDate.DayOfWeek == DayOfWeek.Friday ||
        dropOffDate.DayOfWeek == DayOfWeek.Saturday ||
        dropOffDate.DayOfWeek == DayOfWeek.Sunday )
        outputLabel.Text = dropOffDate.AddDays( 3 ).ToLongDateString();
     else
        outputLabel.Text = dropOffDate.AddDays( 2 ).ToLongDateString();
  }
  private void InitializeComponent()
  {
     this.dateTimePickerDropOff = new System.Windows.Forms.DateTimePicker();
     this.outputLabel = new System.Windows.Forms.Label();
     this.deliveryLabel = new System.Windows.Forms.Label();
     this.dropOffLabel = new System.Windows.Forms.Label();
     this.SuspendLayout();
     // 
     // dateTimePickerDropOff
     // 
     this.dateTimePickerDropOff.Location = new System.Drawing.Point(31, 39);
     this.dateTimePickerDropOff.Name = "dateTimePickerDropOff";
     this.dateTimePickerDropOff.Size = new System.Drawing.Size(200, 20);
     this.dateTimePickerDropOff.TabIndex = 0;
     this.dateTimePickerDropOff.ValueChanged += new System.EventHandler(this.dateTimePickerDropOff_ValueChanged);
     // 
     // outputLabel
     // 
     this.outputLabel.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
     this.outputLabel.Location = new System.Drawing.Point(31, 108);
     this.outputLabel.Name = "outputLabel";
     this.outputLabel.Size = new System.Drawing.Size(200, 23);
     this.outputLabel.TabIndex = 1;
     // 
     // deliveryLabel
     // 
     this.deliveryLabel.AutoSize = true;
     this.deliveryLabel.Location = new System.Drawing.Point(30, 95);
     this.deliveryLabel.Name = "deliveryLabel";
     this.deliveryLabel.Size = new System.Drawing.Size(119, 13);
     this.deliveryLabel.TabIndex = 2;
     // 
     // dropOffLabel
     // 
     this.dropOffLabel.AutoSize = true;
     this.dropOffLabel.Location = new System.Drawing.Point(30, 23);
     this.dropOffLabel.Name = "dropOffLabel";
     this.dropOffLabel.Size = new System.Drawing.Size(72, 13);
     this.dropOffLabel.TabIndex = 3;
     this.dropOffLabel.Text = "Drop Off Date:";
     // 
     // DateTimePickerForm
     // 
     this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
     this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
     this.ClientSize = new System.Drawing.Size(262, 235);
     this.Controls.Add(this.dropOffLabel);
     this.Controls.Add(this.deliveryLabel);
     this.Controls.Add(this.outputLabel);
     this.Controls.Add(this.dateTimePickerDropOff);
     this.Name = "DateTimePickerForm";
     this.Text = "DateTimePickerTest";
     this.ResumeLayout(false);
     this.PerformLayout();

   }
  [STAThread]
  static void Main()
 {
   Application.EnableVisualStyles();
   Application.Run(new Form1());
 }

}

 </source>