DataTable到SQL CE 4服务器

Question

我在C＃中有一个DataTable并想将它发送到我的SQL CE 4服务器。有一点让它更复杂一点是，当它遇到重复时，它应该忽略它并转到DataTable中的下一行。我环顾四周，但我发现很多信息似乎不适用于CE版的SQL Server。什么是这样做的有效方式？

Answer 1

过滤您的DataTable排除在上传之前，重复的行，使用DataTable.Select方法

例如

DataTable table = DataSet1.Tables["Orders"]; 

    // Presuming the DataTable has a column named Date. 
    string expression; 
    expression = "Date > #1/1/00#"; // you will need logic to remove your duplicates 
    DataRow[] foundRows; 

    // Use the Select method to find all rows excluding duplicates 
    foundRows = table.Select(expression); 

    // .NET 3.5 onwards 
    DataTable filteredDataTable = foundRows.copyToDataTable(); 

Answer 2

试试这个逻辑。

var dt = new DataTable(); //Supposed that this is your DataTable 

foreach(DataRow row in dt.Rows) 
    { 

     var find = MyFindMethod("Id"); 1. select statement that find if the id is on database 

     if(find.Rows > 0) 
      { 
      //Id exist do nothing 
      } 
     else 
      { 
      //Id not exist then 2. Do Insert to sql ce id I not exist 
      MyInsertMethod("Id"); 
      } 
    } 

问候