用错误提供程序处理多个错误

Question

我可以为一个错误提供程序处理（例如）6个文本框的多个验证吗？

Answer 1

示例为每个文本框提供一个错误（如果其为空），并指定该错误适用于哪个文本框。

*带开关编辑

private void Form1_Load(object sender, EventArgs e) 
{ 
    foreach (TextBox textBox in Controls) { textBox.Validating += textBox1_Validating; } 
} 

private void textBox1_Validating(object sender, CancelEventArgs e) 
{ 
    ErrorProvider errProv = new ErrorProvider(); 
    TextBox txtSender = (TextBox)sender; 
    string content = txtSender.Text; 
    string error = ""; 

    switch (txtSender.Name) 
    { 
     case "textBox1": 
      error = "error textbox1"; 
      break; 
     case "textBox2": 
      error = "error textbox2"; 
      break; 
     case "textBox3": 
      error = "error textbox3"; 
      break; 
     case "textBox4": 
      error = "error textbox4"; 
      break; 
     case "textBox5": 
      error = "error textbox5"; 
      break; 
     case "textBox6": 
      error = "error textbox6"; 
      break; 
     case "textBox7": 
      error = "error textbox7"; 
      break; 
     case "textBox8": 
      error = "error textbox8"; 
      break; 
    } 

    if (content == "") { errProv.SetError(txtSender, error); } 
}