數(shù)據(jù)的查詢：
private void FullTab() {
        SqlConnection con1 = new SqlConnection();//創(chuàng)建數(shù)據(jù)庫(kù)庫(kù)鏈接
            try
            {
                String con = "server=.;database=common_wjdl;uid=sa;pwd=db2008mima";//定義數(shù)據(jù)庫(kù)連接信息
                con1.ConnectionString = con;
                con1.Open();//打開(kāi)數(shù)據(jù)庫(kù)
                String sql = "select * from Fileuploaded";//創(chuàng)建語(yǔ)句查詢所有數(shù)據(jù)
                SqlDataAdapter ada1 = new SqlDataAdapter(sql, con);//SqlDataAdapter 對(duì)象。 用于填充DataSet （數(shù)據(jù)集）。
                DataSet myset = new DataSet();
                SqlCommand cmd = con1.CreateCommand();//創(chuàng)建數(shù)據(jù)庫(kù)命令
                cmd.CommandText = sql;
                SqlDataReader reader = cmd.ExecuteReader(); //從數(shù)據(jù)庫(kù)中讀取數(shù)據(jù)流存入reader中
            }
            catch (SqlException ee1)
            {
                Console.WriteLine(ee1.Message);//打印異常信息
            }
            catch (IndexOutOfRangeException ee2) {
                Console.WriteLine(ee2.Message);//打印異常信息
            }
        }
        
數(shù)據(jù)的插入：（大致都一樣，只需修改SQL語(yǔ)句就行）
            String con = "server=.;database=common_wjdl;uid=sa;pwd=db2008mima";//定義數(shù)據(jù)庫(kù)連接信息
                            con1.ConnectionString = con;
                            con1.Open();//打開(kāi)數(shù)據(jù)庫(kù)
                            String sql = "insert into Fileuploaded (FileID,FileName,FilePath,QRCodePath,FileSuffix) Values('"+fileNameSave+"','"+fileName+"','"+filePath+"','"+filePath+"','"+fileSuffix+"')";//創(chuàng)建語(yǔ)句向數(shù)據(jù)庫(kù)插入數(shù)據(jù)
                            SqlCommand cmd = con1.CreateCommand();//創(chuàng)建數(shù)據(jù)庫(kù)命令
                            cmd.CommandText = sql;
                            cmd.ExecuteNonQuery();

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