如何使用 C# 方法从 OleDbDataReader 获取结果
How can get result from OleDbDataReader with C# method
如何return这个from方法????
这对我很重要
谢谢
这是我的方法:
public static dynamic GetFactorProperties(int factornumber)
{
using (var db = new OleDbConnection(cs))
{
db.Open();
var cmd = new OleDbCommand("SELECT * FROM FactorList WHERE FactorNumber = @0", db);
cmd.Parameters.AddWithValue("@0", factornumber);
var result = cmd.ExecuteReader();
if(result.Read())
{
return result ;
}
else
{
return ProperiesObject();
}
}
}
这是我的 ExpandoObject()
public static dynamic ProperiesObject()
{
dynamic obj = new ExpandoObject();
obj.FactorDate = string.Empty;
obj.FactorNumber = string.Empty;
obj.CustomerName = string.Empty;
obj.FactorPrice = string.Empty;
obj.Discount = string.Empty;
return obj;
}
这是从方法来源中读取的:
var result = Program.GetFactorProperties(factornumber);
TXTDate.Text = result.FactorDate;
TXTFactorNumber.Text = result.FactorNumber;
TXTCustomerName.Text = result.CustomerName;
TXTFactorParice.Text = result.FactorPrice;
TXTDiscount.Text = result.Discount;
方法应该如下所示:
public static dynamic GetFactorProperties(int factornumber)
{
using (var db = new OleDbConnection(cs))
{
db.Open();
var cmd = new OleDbCommand("SELECT * FROM FactorList WHERE FactorNumber = @0", db);
cmd.Parameters.AddWithValue("@0", factornumber);
var result = cmd.ExecuteReader();
if(result.Read())
{
dynamic obj = new ExpandoObject();
obj.FactorDate = result.GetString(0);
obj.FactorNumber = result.GetString(1);
// ...
return obj;
}
else
{
return ProperiesObject();
}
}
}
GetString 接受要从中获取值的列数
如何return这个from方法????
这对我很重要
谢谢
这是我的方法:
public static dynamic GetFactorProperties(int factornumber)
{
using (var db = new OleDbConnection(cs))
{
db.Open();
var cmd = new OleDbCommand("SELECT * FROM FactorList WHERE FactorNumber = @0", db);
cmd.Parameters.AddWithValue("@0", factornumber);
var result = cmd.ExecuteReader();
if(result.Read())
{
return result ;
}
else
{
return ProperiesObject();
}
}
}
这是我的 ExpandoObject()
public static dynamic ProperiesObject()
{
dynamic obj = new ExpandoObject();
obj.FactorDate = string.Empty;
obj.FactorNumber = string.Empty;
obj.CustomerName = string.Empty;
obj.FactorPrice = string.Empty;
obj.Discount = string.Empty;
return obj;
}
这是从方法来源中读取的:
var result = Program.GetFactorProperties(factornumber);
TXTDate.Text = result.FactorDate;
TXTFactorNumber.Text = result.FactorNumber;
TXTCustomerName.Text = result.CustomerName;
TXTFactorParice.Text = result.FactorPrice;
TXTDiscount.Text = result.Discount;
方法应该如下所示:
public static dynamic GetFactorProperties(int factornumber)
{
using (var db = new OleDbConnection(cs))
{
db.Open();
var cmd = new OleDbCommand("SELECT * FROM FactorList WHERE FactorNumber = @0", db);
cmd.Parameters.AddWithValue("@0", factornumber);
var result = cmd.ExecuteReader();
if(result.Read())
{
dynamic obj = new ExpandoObject();
obj.FactorDate = result.GetString(0);
obj.FactorNumber = result.GetString(1);
// ...
return obj;
}
else
{
return ProperiesObject();
}
}
}
GetString 接受要从中获取值的列数