Question

我有一个datagrid表tblpaymentview，我想从数据库中获取值我已经宣布了concstring 并将代码编写为

private void btnsearch_Click(object sender, EventArgs e)
{
  try
  {
    DateTime time = dtpfromDate.Value;
    String query = "Select jobcode,companyName,vehicleno,shipmentdate,totalamount,advance,drivername,fromPlace,destination from jobmastertable  where (shipmentdate='"+time+"')";
    OleDbDataAdapter dAdapter = new OleDbDataAdapter(query, connString);
    DataSet ds = new DataSet();
    dAdapter.Fill(ds);
    tblpaymentview.DataSource = ds.Tables["tblpaymentview"].DefaultView;
  }
  catch (Exception)
  {
    MessageBox.Show("The application had met with some errors please restart  the application :\n error:closer MSAccess files");
  }
}

任何人都可以帮助我。我也试过（Datepicker）dtpfromdate.value.toshortdateString（）也

Answer 1

你确定你没有例外吗？

其次，为什么假设该表来自tblpaymentview时会被称为jobmastertable？

Answer 2

我不知道这是不是你的问题，但是ACCESS通常使用＃代替'来代替日期格式。

Answer 3

在这些情况下，您可以使用OleDBParameters：

    String query = "Select jobcode,companyName,vehicleno,shipmentdate,totalamount,advance,drivername,fromPlace,destination from jobmastertable  where (shipmentdate=@shipmentdate)";
dAdapter.SelectCommand.Parameters.AddWithValue("@shipmentdate", time);

Answer 4

我会从您的表中查询其他条件，只是为了获得“shippingdate”列的真实数据类型的示例。真的是约会吗？但实际上是一个日期/时间字段。或者存储为角色的日期/时间。我会将其更改为参数化查询并添加适当的类型...例如datetime字段，而不是字符串连接。

Answer 5

按Bindingsource尝试如下：

BindingSource bindingsource1;
DataSet ds;
String query = "Select jobcode,companyName,vehicleno,shipmentdate,totalamount,advance,drivername,fromPlace,destination from jobmastertable  where (shipmentdate='"+time+"')";
OleDbDataAdapter dAdapter = new OleDbDataAdapter(query,Your Connection);
ds = new DataSet();
dAdapter.Fill(ds);
bindingsource1 = new BindingSource();
bindingsource1.DataSource = ds;
bindingsource1.DataMember = ds.Tables[0].TableName;
tblpaymentview.DataSource = bindingsource1;

希望这有效......

查询没有返回

5 个答案: