C# 在Mac电脑上不显示错误信息，但在windows上工作正常

更新：所有功能现在都正常工作。它正在执行所有必要的验证，但alertMessage（例如：ScriptManager.RegisterClientScriptBlock（this，this.GetType（），“alertMessage”，“警报（'SSN已存在，记录已更新。！'），true）；）未显示在屏幕上。 它在windows上运行良好，但在Mac上无法显示

protected void BtnBtnInsert_Click(object sender, System.EventArgs e)
{
    MySqlCommand cmd;
    string str;

    MySqlConnection con = new MySqlConnection(ConString);

    int Status = 0;
    con.Open();

    String UpdateQuery;
    String SSN;

    SSN = TxtBxSSSN.Text.ToString().Trim();

    if (CheckValidSSNBeforeUpdate(SSN) == "1")
    {
        ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "alertMessage", "alert('SSN already exists, record is updated.!')", true);
    }
    else
    {
        InsertNewEmployee();  
    }

    con.Close();
} 

public void InsertNewEmployee()
{
    String SSN, SFName, MName, LName, DOB, Address;

    SSN = TxtBxSSSN.Text.ToString().Trim();
    SFName = lblSFanme.Text.ToString().Trim();
    MName = lblMName.Text.ToString().Trim();
    LName = lblLName.Text.ToString().Trim();
    DOB = lblDOB.Text.ToString().Trim();
    Address = lblAddress.Text.ToString().Trim();

    String SSN1 = new String(SSN.Where(x => Char.IsDigit(x)).ToArray());

    String Tmpe = "SSN : " + SSN + " , SFName : " + SFName + " , MName : " + MName + " , LName : " + LName + " , DOB : " + DOB + " , Address : " + Address;

    if (SSN.Length == 0 || SFName.Length == 0 || MName.Length == 0 || LName.Length == 0 || DOB.Length == 0 || Address.Length == 0)
    {
        ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "alertMessage", "alert('Please enter values in all the fields. All fields are mandatory')", true);
    }
    else
    {
        if (SSN1.Length != 9)
        {
            ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "alertMessage", "alert('Invalid SSN, It must be of 9 digits')", true);
        }
        else
        {
            InsertNewEmployeeRecord();
        }
    }
}

public void InsertNewEmployeeRecord()
{
    String SSN, SFName, MName, LName, DOB, Address;

    SSN = TxtBxSSSN.Text.ToString().Trim();
    SFName = lblSFanme.Text.ToString().Trim();
    MName = lblMName.Text.ToString().Trim();
    LName = lblLName.Text.ToString().Trim();
    DOB = lblDOB.Text.ToString().Trim();
    Address = lblAddress.Text.ToString().Trim();

    MySqlCommand cmd;
    string str;

    MySqlConnection con = new MySqlConnection(ConString);

    int Status = 0;
    con.Open();

    String InsertQuery;

    InsertQuery = "Insert Into Employee VALUES ('"+SSN+ "','"+DOB+"','"+SFName+"','"+MName+"','"+LName+"','"+Address+"')";

    cmd = new MySqlCommand(InsertQuery, con);
    cmd.ExecuteNonQuery();

    con.Close();

    ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "alertMessage", "alert('Record inserted successfully.!')", true);
}

---

在“InsertNewEmployeeRecord”方法中，您具有以下内容：

String UpdateQuery;

InsertQuery = "Insert Into Employee VALUES ('"+SSN+ "','"+DOB+"','"+SFName+"','"+MName+"','"+LName+"','"+Address+"')";

cmd = new MySqlCommand(UpdateQuery, con);

您要声明UpdateQuery，然后将值指定给InsertQuery，然后执行UpdateQuery，该值为null

因此，您需要使用：

 cmd = new MySqlCommand(InsertQuery, con);

---

执行此操作：从insert statemet中删除

“+SSN+”，

，然后运行代码。如果它向您发送错误消息，则表示它正在按编码方式工作。请在

InsertNewEmployeeRecord

中放置断点。你到了吗？@antoniovenerosoconteras它不发送错误消息。最小意外原则-当代码实际插入一行（根本不更新）时，你不应该称它为

UpdateQuery

。。。。。这对于以后查看代码的任何人来说都是很容易混淆的…另外：-您不应该将SQL语句连接在一起-使用参数化查询来避免SQL注入-签出谢谢插入命令正在工作。但它没有显示任何警报