Question

我想过滤我的数据表。我使用datatable.Select()进行过滤，但其中一个条件UnitPrice始终与数据不匹配。此列UnitPrice是数字，并且有一个小数点，如0.1750。

如何修改我的代码？感谢。

我试试：

var result = 
 dt_Excel.Select(@" ID = '" + detailrow["Details_MasterID"].ToString() + "'"
  + " And PatternCode = '" + detailrow["PatternCode"].ToString() + "'"
  + " And StyleID  = '" + detailrow["StyleID"].ToString() + "'"
  + " And BrandID  = '" + detailrow["BrandID"].ToString() + "'"
  + " And SeasonID  = '" + detailrow["SeasonID"].ToString() + "'"
  + " And UnitPrice  = '" +detailrow["UnitPrice"].ToString() + "'"

再试一次：

var result = 
 dt_Excel.Select(@" ID = '" + detailrow["Details_MasterID"].ToString() + "'"
  + " And PatternCode = '" + detailrow["PatternCode"].ToString() + "'"
  + " And StyleID  = '" + detailrow["StyleID"].ToString() + "'"
  + " And BrandID  = '" + detailrow["BrandID"].ToString() + "'"
  + " And SeasonID  = '" + detailrow["SeasonID"].ToString() + "'"
  + " And UnitPrice  = '" +Convert.ToDecimal( detailrow["UnitPrice"]) +"'"

Answer 1

您需要删除数字And UnitPrice = '" +detailrow["UnitPrice"].ToString() +"'"。

尝试更改：

And UnitPrice  = " +detailrow["UnitPrice"].ToString()

为：

{{1}}

Answer 2

您可以使用UnitPrice在DataTable Select中将String作为' (single quotes)传递。

我认为除了PatternCode之外，如果PatternCode有字符串文字，则其他所有其他内容都不需要单引号来过滤记录。

请尝试以下代码段：

var result = dt_Excel.Select(@" ID = " + detailrow["Details_MasterID"] + "'"
                                         + " And PatternCode = '" + detailrow["PatternCode"] + "'"
                                         + " And StyleID  = " + detailrow["StyleID"]
                                         + " And BrandID  = " + detailrow["BrandID"]
                                         + " And SeasonID  = " + detailrow["SeasonID"]
                                         + " And UnitPrice  = " + detailrow["UnitPrice"]);

如何数据表.Select（）过滤数字

2 个答案: