用錯誤提供程序處理多個錯誤

Question

我可以爲一個錯誤提供程序處理（例如）6個文本框的多個驗證嗎？

Answer 1

示例爲每個文本框提供一個錯誤（如果其爲空），並指定該錯誤適用於哪個文本框。

*帶開關編輯

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); } 
}