我是新來的Visual Studio 2010和MySQL。我正在創建一個可以添加員工的表單。但是,當我單擊添加按鈕時,出現錯誤,指出「輸入字符串格式不正確」。輸入字符串格式不正確
這是截屏:
代碼:
private void button_adduser_Click(object sender, EventArgs e)
{
string MyConString = "SERVER=localhost;" + "DATABASE=timekeeping;" + "UID=root;" + "PASSWORD=admin;";
MySqlConnection connection = new MySqlConnection(MyConString);
MySqlCommand command = connection.CreateCommand();
command.Connection = connection;
using (MySqlConnection conn = new MySqlConnection(MyConString))
{
connection.Open();
using (MySqlCommand com = connection.CreateCommand())
{
command.CommandText = "insert into users(fname, mname, lname, position, contactnumber, emailadd, birthday, username, password) values(@fname, @mname, @lname, @position, @contactnumber, @emailadd, @birthday, @username, @password)";
command.Parameters.Add(new MySqlParameter("@fname", SqlDbType.VarChar));
command.Parameters.Add(new MySqlParameter("@mname", SqlDbType.VarChar));
command.Parameters.Add(new MySqlParameter("@lname", SqlDbType.VarChar));
command.Parameters.Add(new MySqlParameter("@position", SqlDbType.VarChar));
command.Parameters.Add(new MySqlParameter("@contactnumber", SqlDbType.VarChar));
command.Parameters.Add(new MySqlParameter("@emailadd", SqlDbType.VarChar));
command.Parameters.Add(new MySqlParameter("@birthday", SqlDbType.DateTime));
command.Parameters.Add(new MySqlParameter("@username", SqlDbType.VarChar));
command.Parameters.Add(new MySqlParameter("@password", SqlDbType.VarChar));
command.Parameters["@fname"].Value = addfname.Text;
command.Parameters["@mname"].Value = addmname.Text;
command.Parameters["@lname"].Value = addlname.Text;
command.Parameters["@position"].Value = addposition.Text;
command.Parameters["@contactnumber"].Value = addcontact.Text;
command.Parameters["@emailadd"].Value = addemail.Text;
command.Parameters["@birthday"].Value = addbday.Text;
command.Parameters["@username"].Value = addusername.Text;
command.Parameters["@password"].Value = addpassword.Text;
command.ExecuteNonQuery();
}
}
}
我已經將你的建議改寫爲「command.Parameters [」@ birthday「]。Value = Convert.ToDateTime(addbday.Text);」但仍然有錯誤。 – sean
@schadi:你仍然得到完全相同的錯誤?這個答案似乎正確。 – rsbarro
@schadi,請不要說「我仍然有錯誤」,而是在評論中粘貼確切的錯誤信息。透視是一種難得的技巧:-) – Johan