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Closing Notepad using C#.Net application


Posted Date: 22 May 2008    Resource Type: Code Snippets    Category: Winforms Controls
Author: komaladeviMember Level: Gold    
Rating: Points: 10



This will explain how to close the notepad using C#.net application


Firstly Add Reference of System.Runtime.InteropServices.
using System.Runtime.InteropServices;
import these DLLs
[DllImport("user32.dll")]
public static extern int FindWindow(string lpClassName, string lpWindowName);
[DllImport("user32.dll")]

public static extern int SendMessage(int hWnd, uint Msg, int wParam, int lParam);


FormDesigner code::


namespace cLoseotherWindow
{
partial class Form1
{
///
/// Required designer variable.
///

private System.ComponentModel.IContainer components = null;

///
/// Clean up any resources being used.
///

/// true if managed resources should be disposed; otherwise, false.
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}

#region Windows Form Designer generated code

///
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
///

private void InitializeComponent()
{
this.button1 = new System.Windows.Forms.Button();
this.textBox1 = new System.Windows.Forms.TextBox();
this.textBox2 = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.SuspendLayout();
//
// button1
//
this.button1.Location = new System.Drawing.Point(166, 134);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(75, 23);
this.button1.TabIndex = 0;
this.button1.Text = "Close";
this.button1.UseVisualStyleBackColor = true;
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(141, 35);
this.textBox1.Name = "textBox1";
this.textBox1.Size = new System.Drawing.Size(100, 20);
this.textBox1.TabIndex = 1;
this.textBox1.Text = "Notepad";
//
// textBox2
//
this.textBox2.Location = new System.Drawing.Point(141, 85);
this.textBox2.Name = "textBox2";
this.textBox2.Size = new System.Drawing.Size(100, 20);
this.textBox2.TabIndex = 2;
this.textBox2.Text = "Untitled - Notepad";
//
// label1
//
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(68, 42);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(63, 13);
this.label1.TabIndex = 3;
this.label1.Text = "Class Name";
//
// label2
//
this.label2.AutoSize = true;
this.label2.Location = new System.Drawing.Point(68, 92);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(70, 13);
this.label2.TabIndex = 4;
this.label2.Text = "Window Text";
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(280, 176);
this.Controls.Add(this.label2);
this.Controls.Add(this.label1);
this.Controls.Add(this.textBox2);
this.Controls.Add(this.textBox1);
this.Controls.Add(this.button1);
this.Name = "Form1";
this.Text = "Form1";
this.Load += new System.EventHandler(this.Form1_Load);
this.ResumeLayout(false);
this.PerformLayout();

}

#endregion

private System.Windows.Forms.Button button1;
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.TextBox textBox2;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
}
}





cs file code

using System;
using System.Collections.Generic;
using System.Windows.Forms;

namespace cLoseotherWindow
{
static class Program
{
///
/// The main entry point for the application.
///

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









Responses

Author: Vasudevan Deepak Kumar    23 May 2008Member Level: Diamond   Points : 2
A few things:

1) A few of the event handlers seem to be missing.
2) If the essence of the code is on the 'SendMessage' (P/Invoke API), wouldn't it have been better if we had a quick console application rather than a heavy windows forms?


Author: komaladevi    23 May 2008Member Level: Gold   Points : 2
it worked for me if anything is missing please provide me with pleasure


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