如何不将新数据添加到与数据库中的数据具有相似id的数据库中？

本文介绍了如何不将新数据添加到与数据库中的数据具有相似id的数据库中？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 大家好。所以我在Windows窗体中创建一个项目，我要做的是从Excel获取数据并在Datagridview中显示它。我正在上传Sql Server上的数据，而不是我在DVG中发送数据。每次我在服务器上传数据我必须向旧数据添加新数据，但我没有数据库中具有相似ID的数据。我有代码在sql Server中添加新数据，但我不知道如何添加新数据，它与sql中的数据具有类似的id。有谁知道怎么做？这是我的代码： Hello everyone. So I am making a Project a in Windows Forms and what I have to do is to get data from Excel and display it in Datagridview. I am Uploading data on Sql Server and than I am sending it in DVG.Every Time I Upload data on Server I have to add new data to old data but I does not have datas in database with similar id. I have Code to add new data in sql Server but I donn't know how not to add new data, that have a similar id with data in sql. Has anyone idea how t do that ? Here is my Code: SqlBulkCopy oSqlBulk = null; string excelFilePath = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location); excelFilePath = Path.Combine(excelFilePath, label1.Text); OleDbConnection excelConn = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + excelFilePath + ";Extended Properties=Excel 12.0;"); try { excelConn.Open(); OleDbCommand excelComm = new OleDbCommand("SELECT *FROM [Sheet1$]", excelConn); OleDbDataReader excelreader = excelComm.ExecuteReader(); using(SqlConnection con = new SqlConnection("Data Source=DESKTOP-OETHK6U\\SQLEXPRESS;Initial Catalog=Intel_DB;Integrated Security=True")) { con.Open(); oSqlBulk = new SqlBulkCopy(con); oSqlBulk.DestinationTableName = "Intel_Data"; oSqlBulk.WriteToServer(excelreader); } label2.Text = "Data has been added into database"; } catch(Exception ex) { label2.Text = "Data has not been added into database"; MessageBox.Show(ex.Message); } finally { oSqlBulk.Close(); oSqlBulk = null; excelConn.Close(); excelConn = null; } 推荐答案 这篇关于如何不将新数据添加到与数据库中的数据具有相似id的数据库中？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！