使用SqlBulkCopy插入數據時出錯

ado.net c# datetime sqlbulkcopy sql-server

我正在嘗試使用SqlBulkCopy批量插入數據到SQL 2008。

這是我的表:

IF OBJECT_ID(N'statement', N'U') IS NOT NULL
DROP TABLE [statement]
GO
CREATE TABLE [statement](
  [ID] INT IDENTITY(1, 1) NOT NULL,
  [date] DATE NOT NULL DEFAULT GETDATE(),
  [amount] DECIMAL(14,2) NOT NULL,
CONSTRAINT [PK_statement] PRIMARY KEY CLUSTERED
(
    [ID] ASC
) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO

這是我的代碼:

private DataTable GetTable()
{
    var list = new List<DataColumn>();
    list.Add(new DataColumn("amount", typeof(SqlDecimal)));
    list.Add(new DataColumn("date", typeof(SqlDateTime)));

    var table = new DataTable("statement");
    table.Columns.AddRange(list.ToArray());

    var row = table.NewRow();
    row["amount"] = (SqlDecimal)myObj.Amount; // decimal Amount { get; set; }
    row["date"] = (SqlDateTime)myObj.Date; // DateTime Date { get; set }
    table.Rows.Add(row);

    return table;
}

private void WriteData()
{
    using (var bulk = new SqlBulkCopy(strConnection, SqlBulkCopyOptions.KeepIdentity & SqlBulkCopyOptions.KeepNulls))
    {
        //table.Columns.ForEach(c => bulk.ColumnMappings.Add(new SqlBulkCopyColumnMapping(c.ColumnName, c.ColumnName)));
        bulk.BatchSize = 25;
        bulk.DestinationTableName = "statement";
        bulk.WriteToServer(GetTable()); // a table from GetTable() 
    }
}

所以我收到錯誤:

來自數據源的SqlDateTime類型的給定值無法轉換為指定目標列的類型date

為什麼??我該如何解決這個問題?請幫幫我!

一般承認的答案

使用原始表腳本,以下代碼有效。

private static DataTable GetTable()
{
    var list = new List<DataColumn>();
    list.Add(new DataColumn("amount", typeof(Double)));
    list.Add(new DataColumn("date", typeof(DateTime)));
    var table = new DataTable("statement");
    table.Columns.AddRange(list.ToArray());

    var row = table.NewRow();
    row["amount"] = 1.2d;
    row["date"] = DateTime.Now.Date;

    table.Rows.Add(row);
    return table;
}
private static void WriteData()
{
    string strConnection = "Server=(local);Database=ScratchDb;Trusted_Connection=True;";
    using (var bulk = new SqlBulkCopy(strConnection, SqlBulkCopyOptions.KeepIdentity & SqlBulkCopyOptions.KeepNulls))
    {
        bulk.ColumnMappings.Add(new SqlBulkCopyColumnMapping("amount", "amount"));
        bulk.ColumnMappings.Add(new SqlBulkCopyColumnMapping("date", "date"));
        bulk.BatchSize = 25;
        bulk.DestinationTableName = "statement";
        bulk.WriteToServer(GetTable());
    }
}

正如Amal所說,由於Identity列,您需要列映射。


專家解答

SqlDateTime表示原始datetime類型。您是否嘗試過在DataTable使用DateTime .NET類型?我希望它可以將其轉換為TSQL datetimedate類型。 Ditto decimal而不是SqlDecimal



許可下: CC-BY-SA with attribution
不隸屬於 Stack Overflow
這個KB合法嗎? 是的,了解原因
許可下: CC-BY-SA with attribution
不隸屬於 Stack Overflow
這個KB合法嗎? 是的,了解原因