我想写一个插入查询需要的财务数据，并从.NET

I'm trying to write an insert query that takes financial data and writes it to my Access database from .net

现在的问题是，我不能经由十进制数据类型的参数，我的数据传递，尽管能够选择他们作为在MS接入十进制数据类型参数窗口，尽管该数据库能够创建十进制数据类型的表中的字段。

The problem is that I cannot pass through my data via decimal datatype parameters despite being able to select them as Decimal datatype in the Ms Access parameters window, and despite the database being able to create table fields of Decimal datatype.

我在想，是什么，我试图做可能吗？如果是的话怎么样？

I was wondering, is what I am trying to do possible? If so how?

下面是我查询的款：

PARAMETERS pMidPrice Decimal;
INSERT INTO NonStandardPricingInstructions ( MidPrice)
SELECT pMidPrice as Expr1

如果我改变十进制转​​换为IEEEDouble那么它的工作原理，但我会preFER通过一个小数如果可能的话。

If I change Decimal to IEEEDouble then it works, but I would prefer to pass through a Decimal if possible.

感谢

推荐答案

以下似乎为我工作：

有关在访问已保存的查询名为[qryDecimalTest]：

For a saved query in Access named [qryDecimalTest]:

PARAMETERS pDecimalColValue Decimal;
SELECT Clients.ID
FROM Clients
WHERE (((Clients.decimalCol)=[pDecimalColValue]));

下面的C＃code发现的记录，其中十进制字段为3，并返回正确的ID值

the following C# code finds the record where the Decimal field is 3 and returns the correct ID value

cmd.CommandText =
    "SELECT ID FROM qryDecimalTest";
decimal queryParameterValue = 3;
cmd.Parameters.Add("?", OleDbType.Decimal).Value = queryParameterValue;
var thing = cmd.ExecuteScalar();
Console.WriteLine(String.Format("{0} ({1})", thing, thing.GetType().ToString()));

编辑回复：评论

我尝试另一个测试，但这次我用Jet.OLEDB对一个Access 2000 .mdb文件。我在访问改变了保存查询

Edit re: comments

I tried another test, but this time I used Jet.OLEDB against an Access 2000 .mdb file. I changed the saved query in Access to

PARAMETERS pMidPrice Decimal;
INSERT INTO NonStandardPricingInstructions ( MidPrice )
SELECT [pMidPrice] AS Expr1;

和使用下面的C＃code

and used the following C# code

cmd.CommandType = System.Data.CommandType.StoredProcedure;
cmd.CommandText =
    "qryDecimalTest";
decimal queryParameterValue = 3;
cmd.Parameters.Add("?", OleDbType.Decimal).Value = queryParameterValue;
cmd.ExecuteNonQuery();

这工作得很好了。