我收到有关ExecuteNonquery is not initialized
的错误。
我认为可能连接到数据库时出错,因为在执行系统之前MessageBox
没有出现。
//Server Connection
private void ServerConnect()
{
string ConnString;
ConnString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=PLAN.accdb";
TConn = new OleDbConnection(ConnString);
TConn.Open();
MessageBox.Show("You Are Connected.");
}
//ADD MEMOS
private void GetMemoList()
{
string query;
DataSet ds = new DataSet();
query = "SELECT MEMOS_ID,DATE,TIME,MEMOS FROM TBLMEMOS ORDER BY DATE ASC";
OleDbDataAdapter da = new OleDbDataAdapter(query, TConn);
da.Fill(ds);
this.dgv1.DataSource = ds.Tables[0];
}
private void AddMemo(string MemoDate, string MemoTime, string Memos)
{
string acc;
acc = "INSERT INTO TBLMEMOS (DATE,TIME,MEMOS) VALUES ('" + MemoDate + "','" + MemoTime + "','" + Memos + "')";
OleDbCommand cmd = new OleDbCommand();
cmd.CommandText = acc;
cmd.Connection = TConn;
cmd.ExecuteNonQuery();
}
private void btnAddMemos_Click(object sender, EventArgs e)
{
AddMemo(this.dtpDate.Value.ToShortDateString(), this.dtpTime.Value.ToShortTimeString(), this.txtInfo.Text.Trim());
GetMemoList();
txtInfo.Clear();
}
答案 0 :(得分:1)
尝试添加这样的参数。
cmd.Parameters.Add("p1", OleDbType.Char).Value = MemoDate ;