现在我在try语句中遇到问题(int count = insert .......) . 该分析师说(当我按下表单上的按钮以保存文本框中的值时)它无法将参数值从String转换为Int32 . 码:
private void button1_Click(object sender,EventArgs e){
string conString = "Provider=Microsoft.Jet.OLEDB.4.0;"
+ "Data Source=C:\\Users\\Simon\\Desktop\\save.mdb";
OleDbConnection empConnection = new OleDbConnection(conString);
string insertStatement = "INSERT INTO obroki_save "
+ "([ID_uporabnika],[datum],[ID_zivila],[skupaj_kalorij]) "
+ "VALUES (@ID_uporabnika,@datum,@ID_zivila,@skupaj_kalorij)";
OleDbCommand insertCommand = new OleDbCommand(insertStatement, empConnection);
insertCommand.Parameters.Add("@ID_uporabnika", OleDbType.Integer).Value = users.iDTextBox.Text;
insertCommand.Parameters.Add("@datum", OleDbType.Date).Value = DateTime.Now;
insertCommand.Parameters.Add("@ID_zivila", OleDbType.Integer).Value = iDTextBox.Text;
insertCommand.Parameters.Add("@skupaj_kalorij", OleDbType.Integer).Value = textBox1.Text;
empConnection.Open();
try
{
int count = insertCommand.ExecuteNonQuery();
}
catch (OleDbException ex)
{
MessageBox.Show(ex.Message);
}
finally
{
empConnection.Close();
textBox1.Clear();
textBox2.Clear();
textBox3.Clear();
textBox4.Clear();
textBox5.Clear();
}
}
2 回答
您正在插入日期作为数据类型Char,这看起来是错误的 .
您需要转换您的数据类型:textbox.value持有一个字符串并进行转换,您可以使用int.Parse .