我在c＃windows中创建了一个表单。我的表单包含一个按钮和一个文本框，其名称为 textbox2 ，其中包含 Form1.Designer.cs 中的代码：
this.textBox2.Location = new System.Drawing.Point(683, 14);
this.textBox2.Name = "textBox2";
this.textBox2.Size = new System.Drawing.Size(100, 20);
this.textBox2.TabIndex = 22;
现在我已经创建了另一个名为Programss.cs的类，它将完成一些任务，当任务完成后，我想在我的表单上打印这样的内容：
textBox2.txt= "Task finished"; //it should print on the textbox of my Form1.cs
如何在Programss.cs和我的其他类中访问此textBox2（目前只能在Form1.Designer.cs中访问）？
编辑：在Philip Stuyck的评论之后： 这是我的Form1.cs代码：
namespace S
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
//please see here
public string TextMessage
{
get { return textBox3.Text; }
set { textBox3.Text = value; }
}
private void btnStart_Click(object sender, EventArgs e)
{
btnStart.Enabled = false;
// StartServer();
}
private void btnClose_Click(object sender, EventArgs e)
{
}
}
}
而Program.cs是：
namespace Senter code here
{
class Program
{
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1());
/////////////////////////////////////////////////////////////////////////////////////
// OtherImportantClasses.Programs prgms = new OtherImportantClasses.Programs();
Form1 theForm = new Form1();
theForm.TextMessage = "Task finished";
}
}
}
Form1.Designer.cs是：
namespace Shekhar
{
partial class Form1
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
public void InitializeComponent()
{
this.btnClose = new System.Windows.Forms.Button();
this.btnStart = new System.Windows.Forms.Button();
this.txtPort = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.textBox2 = new System.Windows.Forms.TextBox();
this.textBox3 = new System.Windows.Forms.TextBox();
this.SuspendLayout();
//
// btnClose
//
this.btnClose.Font = new System.Drawing.Font("Microsoft Sans Serif", 10F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.btnClose.Location = new System.Drawing.Point(313, 11);
this.btnClose.Name = "btnClose";
this.btnClose.Size = new System.Drawing.Size(75, 23);
this.btnClose.TabIndex = 21;
this.btnClose.Text = "Close";
this.btnClose.UseVisualStyleBackColor = true;
this.btnClose.Click += new System.EventHandler(this.btnClose_Click);
//
// btnStart
//
this.btnStart.Font = new System.Drawing.Font("Microsoft Sans Serif", 10F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.btnStart.Location = new System.Drawing.Point(227, 12);
this.btnStart.Name = "btnStart";
this.btnStart.Size = new System.Drawing.Size(75, 23);
this.btnStart.TabIndex = 20;
this.btnStart.Text = "Start";
this.btnStart.UseVisualStyleBackColor = true;
this.btnStart.Click += new System.EventHandler(this.btnStart_Click);
//
// txtPort
//
this.txtPort.Location = new System.Drawing.Point(140, 12);
this.txtPort.Name = "txtPort";
this.txtPort.Size = new System.Drawing.Size(79, 20);
this.txtPort.TabIndex = 19;
//
// label1
//
this.label1.AutoSize = true;
this.label1.Font = new System.Drawing.Font("Microsoft Sans Serif", 11F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.label1.Location = new System.Drawing.Point(78, 12);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(55, 18);
this.label1.TabIndex = 18;
this.label1.Text = "Port : ";
OtherImportantClasses.Programs prog = new OtherImportantClasses.Programs();
//
// label2
//
this.label2.AutoSize = true;
this.label2.Font = new System.Drawing.Font("Microsoft Sans Serif", 11F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.label2.Location = new System.Drawing.Point(400, 20);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(276, 18);
this.label2.TabIndex = 18;
this.label2.Text = "Total Number of device connected :";
//
// textBox2
//
this.textBox2.Location = new System.Drawing.Point(683, 14);
this.textBox2.Name = "textBox2";
this.textBox2.Size = new System.Drawing.Size(100, 20);
this.textBox2.TabIndex = 22;
// this.textBox2.Text = "testbox2";
//
// textBox3
//
this.textBox3.Location = new System.Drawing.Point(81, 60);
this.textBox3.Multiline = true;
this.textBox3.Name = "textBox3";
this.textBox3.Size = new System.Drawing.Size(702, 243);
this.textBox3.TabIndex = 23;
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(818, 315);
this.Controls.Add(this.textBox3);
this.Controls.Add(this.textBox2);
this.Controls.Add(this.label2);
this.Controls.Add(this.btnClose);
this.Controls.Add(this.btnStart);
this.Controls.Add(this.txtPort);
this.Controls.Add(this.label1);
this.Name = "Form1";
this.Text = "Shekhar\'s GT06";
this.Load += new System.EventHandler(this.Form1_Load);
this.ResumeLayout(false);
this.PerformLayout();
}
/*
public string TextMessage
{
get
{
return textBox2.Text;
}
set
{
textBox2.Text = value;
}
}
*/
#endregion
private System.Windows.Forms.Button btnClose;
private System.Windows.Forms.Button btnStart;
private System.Windows.Forms.TextBox txtPort;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.TextBox textBox2;
private System.Windows.Forms.TextBox textBox3;
}
}
Form1.Designer.cs is :
namespace S`enter code here`
{
partial class Form1
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
public void InitializeComponent()
{
this.btnClose = new System.Windows.Forms.Button();
this.btnStart = new System.Windows.Forms.Button();
this.txtPort = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.textBox2 = new System.Windows.Forms.TextBox();
this.textBox3 = new System.Windows.Forms.TextBox();
this.SuspendLayout();
//
// btnClose
//
this.btnClose.Font = new System.Drawing.Font("Microsoft Sans Serif", 10F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.btnClose.Location = new System.Drawing.Point(313, 11);
this.btnClose.Name = "btnClose";
this.btnClose.Size = new System.Drawing.Size(75, 23);
this.btnClose.TabIndex = 21;
this.btnClose.Text = "Close";
this.btnClose.UseVisualStyleBackColor = true;
this.btnClose.Click += new System.EventHandler(this.btnClose_Click);
//
// btnStart
//
this.btnStart.Font = new System.Drawing.Font("Microsoft Sans Serif", 10F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.btnStart.Location = new System.Drawing.Point(227, 12);
this.btnStart.Name = "btnStart";
this.btnStart.Size = new System.Drawing.Size(75, 23);
this.btnStart.TabIndex = 20;
this.btnStart.Text = "Start";
this.btnStart.UseVisualStyleBackColor = true;
this.btnStart.Click += new System.EventHandler(this.btnStart_Click);
//
// txtPort
//
this.txtPort.Location = new System.Drawing.Point(140, 12);
this.txtPort.Name = "txtPort";
this.txtPort.Size = new System.Drawing.Size(79, 20);
this.txtPort.TabIndex = 19;
//
// label1
//
this.label1.AutoSize = true;
this.label1.Font = new System.Drawing.Font("Microsoft Sans Serif", 11F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.label1.Location = new System.Drawing.Point(78, 12);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(55, 18);
this.label1.TabIndex = 18;
this.label1.Text = "Port : ";
OtherImportantClasses.Programs prog = new OtherImportantClasses.Programs();
//
// label2
//
this.label2.AutoSize = true;
this.label2.Font = new System.Drawing.Font("Microsoft Sans Serif", 11F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.label2.Location = new System.Drawing.Point(400, 20);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(276, 18);
this.label2.TabIndex = 18;
this.label2.Text = "Total Number of device connected :";
//
// textBox2
//
this.textBox2.Location = new System.Drawing.Point(683, 14);
this.textBox2.Name = "textBox2";
this.textBox2.Size = new System.Drawing.Size(100, 20);
this.textBox2.TabIndex = 22;
// this.textBox2.Text = "testbox2";
//
// textBox3
//
this.textBox3.Location = new System.Drawing.Point(81, 60);
this.textBox3.Multiline = true;
this.textBox3.Name = "textBox3";
this.textBox3.Size = new System.Drawing.Size(702, 243);
this.textBox3.TabIndex = 23;
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(818, 315);
this.Controls.Add(this.textBox3);
this.Controls.Add(this.textBox2);
this.Controls.Add(this.label2);
this.Controls.Add(this.btnClose);
this.Controls.Add(this.btnStart);
this.Controls.Add(this.txtPort);
this.Controls.Add(this.label1);
this.Name = "Form1";
this.Text = "Shekhar\'s GT06";
this.Load += new System.EventHandler(this.Form1_Load);
this.ResumeLayout(false);
this.PerformLayout();
}
/*
public string TextMessage
{
get
{
return textBox2.Text;
}
set
{
textBox2.Text = value;
}
}
*/
#endregion
private System.Windows.Forms.Button btnClose;
private System.Windows.Forms.Button btnStart;
private System.Windows.Forms.TextBox txtPort;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.TextBox textBox2;
private System.Windows.Forms.TextBox textBox3;
}
}
它不会出现任何错误，但它不会在textBox3中打印任何内容。
注意：请注意，首先我运行winform代码我单击一个按钮，当我单击按钮时，将运行一些进程，这将进一步打印文本框中的文本。 （我觉得我的文本消息并没有被传递给我的消息初衷化。）
答案 0 :(得分：1)
确保textBox2是公共的。（可以在设计器中完成） 在创建Form1时保留对Form1的引用，并通过该引用访问textBox2。
Form1 theForm = new Form1();
... //do stuff
theForm.textBox2.Text = "Task finished";
这不是最优雅的方法，但应该有效。 另一种选择是这样的：
public partial class Form1{
public string TextMessage{
get{
return textBox2.Text;
}
set{
textBox2.Text = value;
}
}
}
和program.cs
Form1 theForm = new Form1();
... //do stuff
theForm.TextMessage = "Task finished";
您的代码无效，因为
Form1 theForm = new Form1();
theForm.TextMessage = "Task finished";
永远不会被执行。
Application.Run(new Form1());
仅在表单关闭时返回，然后应用程序将结束。
以下工作：
Form1 theForm = new Form1();
theForm.TextMessage = "Task finished";
Application.Run(theForm);
但我觉得你不太了解这个框架。 Application.run将使您的应用程序进入消息循环，使应用程序接收窗口消息。
答案 1 :(得分：0)
您可以这样做的一种方法是在Form1中访问一个方法，将textBox名称设置为您想要的任何名称。例如：
public static void SetText (string message)
{
TextBox2.Text = message;
}
然后，您将从Program.cs类中调用它：
Form1.SetText("Whatever text you want the text on the Form1 - TextBox2 to say");
这是穷人改变文字的方式。有一个更详细的解释on this other post if you need more details.
答案 2 :(得分：0)
据我所知，你想在textBox2.txt文本框上打印最终结果，对吧？所以你想在Programss.cs上执行一些方法，一旦执行完毕，你想在textBox2.txt上显示“Task finished”。
如果我没错，你需要做的是从Programss.cs类的方法返回一个值。您必须从Form1.Designer.cs类中调用此方法。根据返回值，您可以随心所欲。
希望这会有所帮助。
答案 3 :(得分：0)
您正在创建两个单独的表单，在第二个表单上设置文本，并希望它出现在第一个表单上。
这样做：
Form1 theForm = new Form1();
theForm.TextMessage = "Task finished";
Application.Run(theForm);