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嗨，我刚刚学习 C# 并且正在努力解决一个问题，如果我能得到任何帮助，我将不胜感激。

我的第一个问题是，我有一个 aspx 表单，当您点击保存按钮时，它会将数据插入到 2 个单独的表中，[Transaction 和 TransactionDetails] 两个表都包含定义为 Guid 的 TransID 字段。事务表 Guid 也是主键。我的问题是如何将作为唯一标识符的相同 guid (TransID) 插入两个表中......然后同时（这是我的希望）我有一个需要运行的存储过程，它需要与相同的 Guid一个参数。所以简而言之，我需要在两个表中使用相同的 GUID，并且必须将新创建的 Guid 传递给我的存储过程。

到目前为止，这是我的代码代码，您能帮我解决我需要添加或更改的内容吗？

protected void Button1_Click(object sender, EventArgs e)
{

    SqlConnection sc = new SqlConnection((System.Configuration.ConfigurationManager.ConnectionStrings["NovaConnectionString"].ConnectionString));

    sc.Open();


    string insertSQL;
    insertSQL = "INSERT INTO [Transaction] (";
    insertSQL += "TransactionID, FileNumber, TransactionDate, RegistryID, InstrumentID, TransactionTypeID, CompanyID, ";
    insertSQL += "InvoiceNo, Unit, Price, DueDiligance, Legal)";
    insertSQL += "VALUES (";
    insertSQL += "@TransactionID, @FileNumber, @TransactionDate, @RegistryID, @InstrumentID, @TransactionTypeID, @CompanyID, ";
    insertSQL += "@InvoiceNo, @Unit, @Price, @DueDiligance, @Legal)";

    //string query1 = String.Format(@"Insert Into Transaction (TransactionID, FileNumber, TransactionDate, RegistryID, InstrumentID,  TransactionTypeID, CompanyID, InvoiceNo, Unit, Price, DueDiligance, Legal)"
    //+ " VALUES (@TransactionID, @FileNumber, @TransactionDate, @RegistryID, @InstrumentID, @TransactionTypeID, @CompanyID, @InvoiceNo, @Unit, @Price, @DueDiligance, @Legal)");
    SqlCommand cmd = new SqlCommand(insertSQL, sc);
    SqlCommand cmd3 = new SqlCommand("uspProcessPurchasedOffsets", sc);
    cmd3.CommandType = CommandType.StoredProcedure;
    //Add the parameters.
    cmd.Parameters.AddWithValue("@TransactionID", Guid.NewGuid());
    cmd.Parameters.AddWithValue("@FileNumber", txtFileNumber.Text);
    cmd.Parameters.AddWithValue("@TransactionDate", txtTransactionCreated.Text);
    cmd.Parameters.AddWithValue("@RegistryID", ddlRegistry.Text);
    cmd.Parameters.AddWithValue("@InstrumentID", ddlInstrument.Text);
    cmd.Parameters.AddWithValue("@TransactionTypeID", txtTransactionTypeID.Text);
    cmd.Parameters.AddWithValue("@CompanyID", ddlCompany.Text);
    cmd.Parameters.AddWithValue("@InvoiceNo", txtInvoiceNo.Text);
    cmd.Parameters.AddWithValue("@Unit", txtTotalVolume.Text);
    cmd.Parameters.AddWithValue("@Price", txtPrice.Text);
    cmd.Parameters.AddWithValue("@DueDiligance", txtDueDiligance.Text);
    cmd.Parameters.AddWithValue("@Legal", txtLegal.Text);

    //Parameter for stored Proc

    cmd3.Parameters.Add("@TransactionID", SqlDbType.UniqueIdentifier);


    cmd.ExecuteNonQuery();

    string insertSQL2;

    insertSQL2 = "INSERT INTO [TransactionDetails] (StartSerialNumber,VintageYear,Units)";
    insertSQL2 += "VALUES (@StartSerialNumber, @VintageYear, @Units)";

    SqlCommand cmd1 = new SqlCommand(insertSQL2, sc);


     //Add the parameters.
     cmd1.Parameters.AddWithValue("@StartSerialNumber", txtStartSerial.Text);
     cmd1.Parameters.AddWithValue("@VintageYear", txtVintage.Text);
     cmd1.Parameters.AddWithValue("@Units", txtVolume.Text);


     cmd1.ExecuteNonQuery();
     cmd3.ExecuteNonQuery();

}

}

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1 回答 1

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我认为您可以将 GUID 存储在适当的中间变量中，然后将相同的变量传递给您的参数以用于存储过程和命令文本

 Guid g = Guid.NewGuid();
 cmd.Parameters.AddWithValue("@TransactionID", g);

 .....

 cmd3.Parameters.Add("@TransactionID", SqlDbType.UniqueIdentifier, 16 ).Value = g;
于 2013-03-24T22:49:13.367 回答