c#之通过 form2 中的命令锁定和解锁 form1 上的文本框

我有两个表格:

  Form1 
  Form2 

每当我选中/取消选中复选框时 checkBox1在 Form2我要更新 textbox1.Readonly那是在 Form1 .如果两者 textbox1和 checkbox1一直在相同的表格上，这很容易:

  private void checkBox1_CheckedChanged(object sender, EventArgs e) { 
    textbox1.Readonly = checkBox1.Checked; 
  } 

当textbox1时，我该怎么办？和 checkbox1在不同 Forms ？

请您参考如下方法:

你可以这样说:

public partial class Form1: Form { 
  ... 
 
  // textBox1 is private (we can't access in from Form2)  
  // so we'd rather create a public property 
  // in order to have an access to textBox1.Readonly 
  public Boolean IsLocked { 
    get { 
      return textBox1.Readonly; 
    } 
    set { 
      textBox1.Readonly = value; 
    } 
  } 
} 
 
... 
 
public partial class Form2: Form { 
  ... 
 
  private void checkBox1_CheckedChanged(object sender, EventArgs e) { 
    // When checkBox1 checked state changed, 
    // let's find out all Form1 instances and update their IsLocked state 
    foreach (Form fm in Application.OpenForms) { 
      Form1 f = fm as Form1; 
 
      if (!Object.RefrenceEquals(f, null)) 
        f.IsLocked = checkBox1.Checked; 
    }   
 
  } 
}