The use of VB control in C #

Control

Step One: Right-click on the toolbar in C #, and on the right-click menu select the option, as shown below

Step two: In the COM component, select the control you want (this is exactly the same as in VB)

At this point, COM controls and C # controls are used as well. However, some of the unique commands in VB, such as dynamic arrays and C # are very different,

Please refer to the following code

VB code:

Dim Lngdata () As Long

Call Cp243client1.readdata (1, Lngdata (), 3,cp_b, Cp_v)

C # code:

System.Array Lngdata=new int32[1024];

Cp243tcps. Cp241len A=cp243tcps. Cp241len. Cp_b;
Cp243tcps. Cp241type B=cp243tcps. Cp241type. Cp_v;

cp243. ReadData (1, ref lngdata, 3, ref a,ref B);

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Attached: C # using the CP243 control of the source code

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Using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

A summary description of the

namespace CP243
{
 ///<summary>
 ///Form1.
 ///</summary>
 public class FrmTest:System.Windows.Forms.Form
 {
  Private System.Windows.Forms.Button Cmdconn;
  Private System.Windows.Forms.PictureBox picflag;
  Private axcp243tcps.axcp243client cp243;
  Private System.Windows.Forms.Button cmdclose;
  Private System.Windows.Forms.TextBox txtdata;
  Private System.Windows.Forms.CheckBox Chkauto;
  Private System.Windows.Forms.Timer timer1;
  Private System.Windows.Forms.Button cmdread;
  Private System.Windows.Forms.Label Label1;
  Private System.Windows.Forms.TextBox txtip;
  Private System.Windows.Forms.Label label2;
  Private System.Windows.Forms.TextBox txtaddr;
  Private System.Windows.Forms.Button cmdwrite;
  private System.ComponentModel.IContainer components;

Public Frmtest ()
{
//
Required for Windows Forms Designer support
//
InitializeComponent ();

//
TODO: Add any constructor code after the InitializeComponent call
//
}

<summary>
Clean up all resources that are in use.
</summary>
protected override void Dispose (bool disposing)
{
if (disposing)
{
if (Components!= null)
{
Components. Dispose ();
}
}
Base. Dispose (disposing);
}

Code generated #region the Windows forms Designer
<summary>
Designer supports required methods-do not use the Code editor to modify
The contents of this method.
</summary>
private void InitializeComponent ()
{
this.components = new System.ComponentModel.Container ();
System.Resources.ResourceManager resources = new System.Resources.ResourceManager (typeof (Frmtest));
this.cp243 = new Axcp243tcps.axcp243client ();
This.cmdconn = new System.Windows.Forms.Button ();
This.picflag = new System.Windows.Forms.PictureBox ();
This.cmdclose = new System.Windows.Forms.Button ();
This.txtdata = new System.Windows.Forms.TextBox ();
This.chkauto = new System.Windows.Forms.CheckBox ();
This.timer1 = new System.Windows.Forms.Timer (this.components);
This.cmdread = new System.Windows.Forms.Button ();
This.label1 = new System.Windows.Forms.Label ();
This.txtip = new System.Windows.Forms.TextBox ();
This.label2 = new System.Windows.Forms.Label ();
THIS.TXTADDR = new System.Windows.Forms.TextBox ();
This.cmdwrite = new System.Windows.Forms.Button ();
((System.ComponentModel.ISupportInitialize) (this.cp243)). BeginInit ();
This. SuspendLayout ();
//
cp243
//
This.cp243.Enabled = true;
This.cp243.Location = new System.Drawing.Point (168, 40);
This.cp243.Name = "cp243";
This.cp243.OcxState = ((System.Windows.Forms.AxHost.State) (resources. GetObject ("cp243.") OcxState "));
This.cp243.Size = new System.Drawing.Size (143, 101);
This.cp243.TabIndex = 0;
//
Cmdconn
//
This.cmdConn.Location = new System.Drawing.Point (240, 8);
This.cmdConn.Name = "Cmdconn";
This.cmdConn.Size = new System.Drawing.Size (56, 24);
This.cmdConn.TabIndex = 1;
This.cmdConn.Text = "Connection";
This.cmdConn.Click + = new System.EventHandler (This.cmdconn_click);
//
Picflag
//
This.picFlag.BackColor = System.Drawing.Color.Red;
This.picFlag.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
This.picFlag.Location = new System.Drawing.Point (8, 8);
This.picFlag.Name = "Picflag";
This.picFlag.Size = new System.Drawing.Size (24, 24);
This.picFlag.TabIndex = 2;
This.picFlag.TabStop = false;
//
Cmdclose
//
This.cmdClose.Location = new System.Drawing.Point (304, 8);
This.cmdClose.Name = "Cmdclose";
This.cmdClose.Size = new System.Drawing.Size (56, 24);
This.cmdClose.TabIndex = 3;
This.cmdClose.Text = "Disconnected";
This.cmdClose.Click + = new System.EventHandler (This.cmdclose_click);
//
Txtdata
//
This.txtData.Location = new System.Drawing.Point (88, 176);
This.txtData.Name = "Txtdata";
This.txtData.Size = new System.Drawing.Size (272, 21);
This.txtData.TabIndex = 4;
This.txtData.Text = "";
//
Chkauto
//
This.chkAuto.Location = new System.Drawing.Point (304, 144);
This.chkAuto.Name = "Chkauto";
This.chkAuto.Size = new System.Drawing.Size (64, 24);
This.chkAuto.TabIndex = 5;
This.chkAuto.Text = "continuous reading";
This.chkAuto.CheckedChanged + = new System.EventHandler (this.chkauto_checkedchanged);
//
Timer1
//
This.timer1.Interval = 500;
This.timer1.Tick + = new System.EventHandler (This.timer1_tick);
//
Cmdread
//
This.cmdRead.Location = new System.Drawing.Point (16, 144);
This.cmdRead.Name = "Cmdread";
This.cmdRead.Size = new System.Drawing.Size (64, 24);
This.cmdRead.TabIndex = 6;
This.cmdRead.Text = "read";
This.cmdRead.Click + = new System.EventHandler (This.cmdread_click);
//
Label1
//
This.label1.Location = new System.Drawing.Point (40, 13);
This.label1.Name = "Label1";
This.label1.Size = new System.Drawing.Size (112, 16);
This.label1.TabIndex = 7;
This.label1.Text = "IP";
//
Txtip
//
This.txtIP.Location = new System.Drawing.Point (64, 10);
This.txtIP.Name = "Txtip";
This.txtIP.Size = new System.Drawing.Size (152, 21);
This.txtIP.TabIndex = 8;
This.txtIP.Text = "192.168.0.166";
//
Label2
//
This.label2.Location = new System.Drawing.Point (16, 181);
This.label2.Name = "Label2";
This.label2.Size = new System.Drawing.Size (40, 16);
This.label2.TabIndex = 9;
This.label2.Text = "Address";
//
Txtaddr
//
This.txtAddr.Location = new System.Drawing.Point (48, 176);
This.txtAddr.Name = "Txtaddr";
This.txtAddr.Size = new System.Drawing.Size (32, 21);
This.txtAddr.TabIndex = 10;
This.txtAddr.Text = "0";
//
Cmdwrite
//
This.cmdWrite.Location = new System.Drawing.Point (88, 144);
This.cmdWrite.Name = "Cmdwrite";
This.cmdWrite.Size = new System.Drawing.Size (64, 24);
This.cmdWrite.TabIndex = 11;
This.cmdWrite.Text = "Write";
This.cmdWrite.Click + = new System.EventHandler (This.cmdwrite_click);
//
Frmtest
//
This. Autoscale = false;
This. AutoScaleBaseSize = new System.Drawing.Size (6, 14);
This. ClientSize = new System.Drawing.Size (376, 214);
This. Controls.Add (This.cmdwrite);
This. Controls.Add (THIS.TXTADDR);
This. Controls.Add (THIS.LABEL2);
This. Controls.Add (This.txtip);
This. Controls.Add (THIS.LABEL1);
This. Controls.Add (This.cmdread);
This. Controls.Add (This.chkauto);
This. Controls.Add (This.txtdata);
This. Controls.Add (This.cmdclose);
This. Controls.Add (This.picflag);
This. Controls.Add (This.cmdconn);
This. Controls.Add (this.cp243);
This. Name = "Frmtest";
This. StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
This. Text = "CP243 test";
This. topmost = true;
This. Load + = new System.EventHandler (this.frmtest_load);
((System.ComponentModel.ISupportInitialize) (this.cp243)). EndInit ();
This. ResumeLayout (FALSE);

}
#endregion

<summary>
The main entry point for the application.
</summary>
[STAThread]
static void Main ()
{
Application.Run (New Frmtest ());
}

private void Cmdconn_click (object sender, System.EventArgs e)
{
int lngret;
String Strip=txtip.text;
int intport=102;
cp243. REMOTEHOST=STR;
cp243. RemotePort =intport;
lngret=cp243. Openconnect (ref (StrIP), ref (Intport));
if (lngret==0)
{
Picflag.backcolor=system.drawing.color.green;
}
Else
{
picflag.backcolor=system.drawing.color.red;
}

}

private void Cmdclose_click (object sender, System.EventArgs e)
{
cp243. Closeconnect ();
picflag.backcolor=system.drawing.color.red;
}

private void Chkauto_checkedchanged (object sender, System.EventArgs e)
{
Timer1. enabled= chkauto.text== "0"? False:true;

}

private void Cmdread_click (object sender, System.EventArgs e)
{
System.Array Lngdata=new int32[1024];

   Cp243tcps. cp241len  A=cp243tcps. Cp241len. Cp_b;
   Cp243tcps. Cp241type B=cp243tcps. Cp241type. Cp_v;
      
   if (cp243. ReadData (Convert.ToInt32 (txtaddr.text), ref lngdata, 3, ref a,ref b) = = 0)
   {
    Txtdata.text =lngdata.getvalue (0). ToString ();
  }
 
 }
  private void Cmdwrite_click (object sender, System.EventArgs e)
  {
 & nbsp System.Array lngdata=new int32[1024];

Cp243tcps. Cp241len A=cp243tcps. Cp241len. Cp_b;
Cp243tcps. Cp241type B=cp243tcps. Cp241type. Cp_v;

Lngdata.setvalue (Convert.ToInt32 (Txtdata.text), 0);
if (cp243. WriteData (Convert.ToInt32 (txtaddr.text), ref lngdata, 1, ref a,ref B)!= 0)
{
Txtdata.text = "ERROR";
}
}

private void Timer1_Tick (object sender, System.EventArgs e)
{
Cmdread_click (sender,e);
}

private void Frmtest_load (object sender, System.EventArgs e)
{

}

}
}