.net 如何用c语言将Excel数据表中的数据导入sql#

问题

如何将代码导入数据表写入SQL server 2012。

详细信息

我有excel工作表名InvoiceData.xlsx，它有两列

UnitCode    CurrentMeterReading
21544                2900
22152                9000
19822                9200

我从excel工作表到datatable获取成功数据，如下所示：

public System.Data. DataTable Showdataprint()
        {

            OleDbConnection con = new OleDbConnection(connectionString);
            con.Open();   
            string str = @"SELECT  [UnitCode],[CurrentMeterReading] FROM  [Sheet1$]";
            OleDbCommand com = new OleDbCommand();
            com = new OleDbCommand(str, con);
            OleDbDataAdapter oledbda = new OleDbDataAdapter();
            oledbda = new OleDbDataAdapter(com);
            DataSet ds = new DataSet();
            ds = new DataSet();
            oledbda.Fill(ds,"[Sheet1$]");
            con.Close();
            System.Data.DataTable dt = new System.Data.DataTable();
            dt = ds.Tables["[Sheet1$]"];
            return dt;

        }

Serial  UnitCode          CurrentMeterReading
 2001   21544                2900
 2002   22152                9000
 2003   19822                9200

我成功地将数据从excel获取到Datatable 现在我需要将数据从datatable导入sql server 2012 表名：华欣语音 主键：序列号

CREATE TABLE [dbo].[WAHInvoice](
    [Serial] [int] NOT NULL,
    [Year] [int] NULL,
    [Month] [int] NULL,
    [UnitCode] [int] NULL,
    [CurrentReadingDate] [date] NULL,
    [CurrentMeterReading] [decimal](18, 2) NULL,
 CONSTRAINT [PK_WAHInvoice_1] PRIMARY KEY CLUSTERED 
(
    [Serial] ASC

)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]

我需要知道如何将数据从excel导入sql。

假设我在WahInvoice表中有关于sql的数据

对于max serial 2000，这意味着数据如下：

public System.Data. DataTable Showdataprint()
        {

            OleDbConnection con = new OleDbConnection(connectionString);
            con.Open();   
            string str = @"SELECT  [UnitCode],[CurrentMeterReading] FROM  [Sheet1$]";
            OleDbCommand com = new OleDbCommand();
            com = new OleDbCommand(str, con);
            OleDbDataAdapter oledbda = new OleDbDataAdapter();
            oledbda = new OleDbDataAdapter(com);
            DataSet ds = new DataSet();
            ds = new DataSet();
            oledbda.Fill(ds,"[Sheet1$]");
            con.Close();
            System.Data.DataTable dt = new System.Data.DataTable();
            dt = ds.Tables["[Sheet1$]"];
            return dt;

        }

Serial  UnitCode          CurrentMeterReading
 2001   21544                2900
 2002   22152                9000
 2003   19822                9200

剩余列的所有值都将为null

实际上，我是在Import按钮下为将数据导入sql而编写的 在“导入”按钮下，单击“我写”如下所示：

System.Data.DataTable dt = new System.Data.DataTable();
                    dt = Showdataprint();
//How to import datatable to sql server 2012

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