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New Message on BDOTNET
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From: saileshsaha
Message 4 in Discussion
Hi!
Please go through
the following. This will help you.
We will examine a
few examples for executing shell commands outside of our program using C#. In
VB.Net, we can make use of the familiar Shell command to run an executable
program. However the Shell function is not available in C#. The Process Class
provides access to local and remote processes and enables you to start and stop
local system processes.
In our example we will create an example for
running the following processes from our program.
1. Calculator
2. DOS
Batch program � Map a network drive
3. Internet explorer with a specified
URL
4. Specified Document in Microsoft Word.
C#
Application
Our basic application is a Winforms Visual C# application and
will consist of a Windows Form with button controls to invoke the processes
specified in the list. (The complete code for the application is provided at the
bottom of the article).
Add button controls from the toolbox as shown in
the figure below.
<V:SHAPETYPE id=_x0000_t75 coordsize="21600,21600" o:spt="75"
o:preferrelative="t" path="[EMAIL PROTECTED]@[EMAIL PROTECTED]@[EMAIL
PROTECTED]@[EMAIL PROTECTED]@5xe" filled="f"
stroked="f"><V:STROKE joinstyle="miter"></V:STROKE><V:FORMULAS><V:F
eqn="if lineDrawn pixelLineWidth 0"></V:F><V:F eqn="sum @0 1 0"></V:F><V:F
eqn="sum 0 0 @1"></V:F><V:F eqn="prod @2 1 2"></V:F><V:F
eqn="prod @3 21600 pixelWidth"></V:F><V:F
eqn="prod @3 21600 pixelHeight"></V:F><V:F eqn="sum @0 0 1"></V:F><V:F
eqn="prod @6 1 2"></V:F><V:F eqn="prod @7 21600 pixelWidth"></V:F><V:F
eqn="sum @8 21600 0"></V:F><V:F eqn="prod @7 21600 pixelHeight"></V:F><V:F
eqn="sum @10 21600 0"></V:F></V:FORMULAS><V:PATH o:extrusionok="f"
gradientshapeok="t" o:connecttype="rect"></V:PATH><O:LOCK v:ext="edit"
aspectratio="t"></O:LOCK></V:SHAPETYPE><V:SHAPE
id=_x0000_i1025 style="WIDTH: 6in; HEIGHT: 255pt"
type="#_x0000_t75"><V:IMAGEDATA
src="file:///C:/DOCUME~1/mahesh/LOCALS~1/Temp/msoclip1/01/clip_image001.png"
o:title=""></V:IMAGEDATA></V:SHAPE><V:SHAPETYPE
id=_x0000_t75 coordsize="21600,21600" o:spt="75" o:preferrelative="t"
path="[EMAIL PROTECTED]@[EMAIL PROTECTED]@[EMAIL PROTECTED]@[EMAIL PROTECTED]@5xe"
filled="f" stroked="f"><V:STROKE
joinstyle="miter"></V:STROKE><V:FORMULAS><V:F
eqn="if lineDrawn pixelLineWidth 0"></V:F><V:F eqn="sum @0 1 0"></V:F><V:F
eqn="sum 0 0 @1"></V:F><V:F eqn="prod @2 1 2"></V:F><V:F
eqn="prod @3 21600 pixelWidth"></V:F><V:F
eqn="prod @3 21600 pixelHeight"></V:F><V:F eqn="sum @0 0 1"></V:F><V:F
eqn="prod @6 1 2"></V:F><V:F eqn="prod @7 21600 pixelWidth"></V:F><V:F
eqn="sum @8 21600 0"></V:F><V:F eqn="prod @7 21600 pixelHeight"></V:F><V:F
eqn="sum @10 21600 0"></V:F></V:FORMULAS><V:PATH o:extrusionok="f"
gradientshapeok="t" o:connecttype="rect"></V:PATH><O:LOCK v:ext="edit"
aspectratio="t"></O:LOCK></V:SHAPETYPE><V:SHAPE id=_x0000_i1025
style="WIDTH: 225pt; HEIGHT: 180.75pt" type="#_x0000_t75"><V:IMAGEDATA
src="file:///C:/TEMP/msoclip1/01/clip_image001.png"
o:title="figure1"></V:IMAGEDATA></V:SHAPE>
Figure 1: Basic Windows Form
Calculator
The option to provide a calculator to the
end user on the click of a button can be very useful. The calculator program can
be invoked from command line using the command �calc�.
Add the following
code to the event handler for the button�s Click event as shown below. Details
explaining the code follow the code listing.
System.Diagnostics.Process
proc = new
System.Diagnostics.Process();
proc.EnableRaisingEvents=false;
proc.StartInfo.FileName="calc";
proc.Start();
Code
Listing: Invoke the calculator from a C# program
We create a new Process
and assign the FileName variable to the name of the executable that we want to
run. The Start() method of the Process object starts the specified application
and assigns it to the process component.
<V:SHAPETYPE
id=_x0000_t75 coordsize="21600,21600" o:spt="75" o:preferrelative="t"
path="[EMAIL PROTECTED]@[EMAIL PROTECTED]@[EMAIL PROTECTED]@[EMAIL PROTECTED]@5xe"
filled="f" stroked="f"><V:STROKE
joinstyle="miter"></V:STROKE><V:FORMULAS><V:F
eqn="if lineDrawn pixelLineWidth 0"></V:F><V:F eqn="sum @0 1 0"></V:F><V:F
eqn="sum 0 0 @1"></V:F><V:F eqn="prod @2 1 2"></V:F><V:F
eqn="prod @3 21600 pixelWidth"></V:F><V:F
eqn="prod @3 21600 pixelHeight"></V:F><V:F eqn="sum @0 0 1"></V:F><V:F
eqn="prod @6 1 2"></V:F><V:F eqn="prod @7 21600 pixelWidth"></V:F><V:F
eqn="sum @8 21600 0"></V:F><V:F eqn="prod @7 21600 pixelHeight"></V:F><V:F
eqn="sum @10 21600 0"></V:F></V:FORMULAS><V:PATH o:extrusionok="f"
gradientshapeok="t" o:connecttype="rect"></V:PATH><O:LOCK v:ext="edit"
aspectratio="t"></O:LOCK></V:SHAPETYPE><V:SHAPE id=_x0000_i1025
style="WIDTH: 6in; HEIGHT: 255pt" type="#_x0000_t75"><V:IMAGEDATA
src="file:///C:/DOCUME~1/mahesh/LOCALS~1/Temp/msoclip1/01/clip_image001.png"
o:title=""></V:IMAGEDATA></V:SHAPE><V:SHAPETYPE
id=_x0000_t75 coordsize="21600,21600" o:spt="75" o:preferrelative="t"
path="[EMAIL PROTECTED]@[EMAIL PROTECTED]@[EMAIL PROTECTED]@[EMAIL PROTECTED]@5xe"
filled="f" stroked="f"><V:STROKE
joinstyle="miter"></V:STROKE><V:FORMULAS><V:F
eqn="if lineDrawn pixelLineWidth 0"></V:F><V:F eqn="sum @0 1 0"></V:F><V:F
eqn="sum 0 0 @1"></V:F><V:F eqn="prod @2 1 2"></V:F><V:F
eqn="prod @3 21600 pixelWidth"></V:F><V:F
eqn="prod @3 21600 pixelHeight"></V:F><V:F eqn="sum @0 0 1"></V:F><V:F
eqn="prod @6 1 2"></V:F><V:F eqn="prod @7 21600 pixelWidth"></V:F><V:F
eqn="sum @8 21600 0"></V:F><V:F eqn="prod @7 21600 pixelHeight"></V:F><V:F
eqn="sum @10 21600 0"></V:F></V:FORMULAS><V:PATH o:extrusionok="f"
gradientshapeok="t" o:connecttype="rect"></V:PATH><O:LOCK v:ext="edit"
aspectratio="t"></O:LOCK></V:SHAPETYPE><V:SHAPE id=_x0000_i1025
style="WIDTH: 196.5pt; HEIGHT: 189pt" type="#_x0000_t75"><V:IMAGEDATA
src="../../../images/ShellC2.gif"
o:title="figure2"></V:IMAGEDATA></V:SHAPE>
Figure: Calculator is invoked when the Calculator
button is clicked.
Map a network Drive
We will invoke a DOS
batch script which will map a network drive for us. The DOS command for mapping
a drive is as follows:
NET USE <DriveName>:
\\<RemoteServer>\<SharedFolder>
/User:<Domain>\<UserName> <password>
/PERSISTENT:YES
Note : Ensure that the drive mapping is not already in
use.
Create a text file containing the above command and Save the file as
netdrv.bat. I saved the file in folder c:\dotnetstuff\netdrv.bat.
Here is
the format of the command contained in the netdrv.bat file.
NET USE U:
\\master\testshare /User:Enterprise\dchoksi passwd /PERSISTENT:YES
Add
the following code to the button click event handler of the button labeled �Map
Network Drive�.
System.Diagnostics.Process proc = new
System.Diagnostics.Process();
proc.EnableRaisingEvents=false;
proc.StartInfo.FileName="c:\\dotnetstuff\\netdrv.bat";
proc.Start();
MessageBox.Show("Map
Drive Created");
Code Listing: This code will execute the dos batch file
and U:\ is mapped to the remote share
\\master\testshare.
Microsoft.com
We will create a button
that will take the user to the Microsoft.com web site. This logic can be used to
open up a registration form for product registration or to point to online help
in Windows forms products.
Add the following code in the button Click
event handler
System.Diagnostics.Process proc = new
System.Diagnostics.Process();
proc.EnableRaisingEvents=false;
proc.StartInfo.FileName="iexplore";
proc.StartInfo.Arguments="http://www.microsoft.com";;
proc.Start();
proc.WaitForExit();
MessageBox.Show("You
have just visited www.microsoft.com");
Code Listing:
Microsoft.com
Note that the code waits for the Internet Explorer process
to exit and then proceeds to display the messagebox. This is achieved through
the use of the WaitForExit() function of the Process object.
Open a specific document in Microsoft
Word
Add the following code to the button�s OnClick event
handler.
System.Diagnostics.Process proc = new
System.Diagnostics.Process();
proc.EnableRaisingEvents=false;
proc.StartInfo.FileName="winword";
proc.StartInfo.Arguments="C:\\Dotnetstuff\\TestWordDoc.doc";
proc.Start();
Code
Listing : Open specific Word Document
Note that the name of the Word
document to open is specified in the Arguments for the StartInfo of the
Process.
Complete Code Listing:
using
System;
using System.Drawing;
using System.Collections;
using
System.ComponentModel;
using System.Windows.Forms;
namespace
ShellCS_NS
{
public class Form1 :
System.Windows.Forms.Form
{
private System.Windows.Forms.Button
button1;
private System.Windows.Forms.Button button2;
private
System.Windows.Forms.Button button3;
private System.Windows.Forms.Button
button4;
public Form1()
{
this.button1 = new
System.Windows.Forms.Button();
this.button2 = new
System.Windows.Forms.Button();
this.button3 = new
System.Windows.Forms.Button();
this.button4 = new
System.Windows.Forms.Button();
this.SuspendLayout();
this.button1.Location
= new System.Drawing.Point(16, 24);
this.button1.Name =
"button1";
this.button1.Size = new System.Drawing.Size(112,
72);
this.button1.TabIndex = 0;
this.button1.Text =
"Calculator";
this.button1.Click += new
System.EventHandler(this.button1_Click);
this.button2.Location = new
System.Drawing.Point(16, 120);
this.button2.Name =
"button2";
this.button2.Size = new System.Drawing.Size(112,
72);
this.button2.TabIndex = 1;
this.button2.Text = "Map Network
Drive";
this.button2.Click += new
System.EventHandler(this.button2_Click);
this.button3.Location = new
System.Drawing.Point(168, 24);
this.button3.Name =
"button3";
this.button3.Size = new System.Drawing.Size(112,
72);
this.button3.TabIndex = 2;
this.button3.Text =
"Microsoft.com";
this.button3.Click += new
System.EventHandler(this.button3_Click);
this.button4.Location = new
System.Drawing.Point(168, 120);
this.button4.Name =
"button4";
this.button4.Size = new System.Drawing.Size(112,
64);
this.button4.TabIndex = 3;
this.button4.Text = "My Word
Document";
this.button4.Click += new
System.EventHandler(this.button4_Click);
this.AutoScaleBaseSize = new
System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292,
213);
this.Controls.AddRange(new System.Windows.Forms.Control[]
{
this.button4, this.button3, this.button2, this.button1});
this.Name =
"Form1";
this.Text =
"Form1";
this.ResumeLayout(false);
}
protected override void
Dispose( bool disposing )
{
base.Dispose( disposing
);
}
[STAThread]
static void Main()
{
Application.Run(new
Form1());
}
private void button1_Click(object sender, System.EventArgs
e)
{
System.Diagnostics.Process proc = new
System.Diagnostics.Process();
proc.EnableRaisingEvents=false;
proc.StartInfo.FileName="calc";
proc.Start();
}
private
void button2_Click(object sender, System.EventArgs
e)
{
System.Diagnostics.Process proc = new
System.Diagnostics.Process();
proc.EnableRaisingEvents=false;
proc.StartInfo.FileName="c:\\dotnetstuff\\NETDRV.bat";
proc.Start();
MessageBox.Show("Map
Drive Created");
}
private void button3_Click(object sender,
System.EventArgs e)
{
System.Diagnostics.Process proc = new
System.Diagnostics.Process();
proc.EnableRaisingEvents=false;
proc.StartInfo.FileName="iexplore";
proc.StartInfo.Arguments="http://www.microsoft.com";;
proc.Start();
proc.WaitForExit();
MessageBox.Show("You
have just visited www.microsoft.com");
}
private void
button4_Click(object sender, System.EventArgs
e)
{
System.Diagnostics.Process proc = new
System.Diagnostics.Process();
proc.EnableRaisingEvents=false;
proc.StartInfo.FileName="winword";
proc.StartInfo.Arguments="C:\\Dotnetstuff\\TestWordDoc.doc";
proc.Start();
}
}
}
Hope this will solve
your problem.
Thanks and
Regards,
Sailesh
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