c# - 尝试连接到 C# 中的 Excel 电子表格

Question

我正在尝试从电子表格中提取大量数据，但无法在我的 C# 代码中成功建立连接。 B

下面是连接字符串和我用来建立连接的代码。该程序的目标是从电子表格中提取数据并将其存入 SQL 数据库。我无法通过 connection.open() 命令，但是没有收到此错误消息:

“外部表不是预期的格式”

        string connectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\Users\nearod\Desktop\TestLoad.xlsx;Extended Properties='Excel 8.0;HDR=Yes;IMEX=1'";
        string queryString = "SELECT * FROM [SQL AgentUnique ID Test Load$]";
        try
        {
            OleDbDataReader reader;
            using (OleDbConnection connection = new OleDbConnection(connectionString))
            {

                OleDbCommand command = new OleDbCommand(queryString, connection);
                connection.Open();
                reader = command.ExecuteReader();


                while (reader.Read())
                {
                    counter++;

                    //Access db values
                    string compCode = "";
                    string agId = "";
                    string fName = "";
                    string lName = "";
                    string nameSuffix = "";


                    compCode = reader.GetValue(0).ToString();
                    agId = reader.GetString(1);
                    fName = reader.GetString(2);
                    lName = reader.GetString(3);
                    nameSuffix = reader.GetString(4);

                    sqlComm.Parameters.Add(companyCode);
                    sqlComm.Parameters.Add(agentID);
                    sqlComm.Parameters.Add(firstName);
                    sqlComm.Parameters.Add(lastName);
                    sqlComm.Parameters.Add(suffix);

                    //Initialize connection objects
                    cm = Dts.Connections["QUAHILSQ03"];
                    sqlConn = (SqlConnection)cm.AcquireConnection(Dts.Transaction);
                    sqlComm = new SqlCommand("AgentResourcesU01.dbo.sp_AgentIdAprCheck", sqlConn);
                    sqlComm.CommandType = CommandType.StoredProcedure;

                    //Execute stored procedure
                    sqlComm.ExecuteNonQuery();

                }
                reader.Close();
                connection.Close();
                OleDbConnection.ReleaseObjectPool();
            }

Answer 1

对于 *.xlsx，您需要 Ace 驱动程序:Microsoft.ACE.OLEDB.12.0

string connectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;
 Data Source=C:\Users\nearod\Desktop\TestLoad.xlsx;
 Extended Properties='Excel 8.0;HDR=Yes;IMEX=1'";