我跟随两个表及其字段:
invoice - invcID (PK), bank, bankFee
invoiceDetails - incDetails (PK), Section, Description, invcID (FK with type number)
以下是我用于将数据插入两个表的查询。
INSERT INTO invoice([bank], [bankFee]) VALUES (@bank,@bankFee)
OleDbCommand command = new OleDbCommand(queryString, conection);
command.Parameters.Add("@bank",txtBank.Text);
command.Parameters.Add("@bankFee",txtBankFee.Text);
int invoiceID = (int)command.ExecuteNonQuery();
INSERT INTO invoiceDetails ([section], [description],[invcID]) VALUES (@section,@description,@invcID)
OleDbCommand command = new OleDbCommand(queryString, conection);
command.Parameters.Add("@section",txtSection.Text);
command.Parameters.Add("@description",txtDescription.Text);
command.Parameters.Add("@invcID",invoiceID);
command.ExecuteNonQuery()
第一个查询运行正常,但第二个查询引发类型不匹配的异常。我尝试使用DMax()
,但我仍面临例外Data type mismatch in criteria expression
更新 以下是表结构
table - invoiceID
invcID - Primary Key - data type auto number
bank - data type text
bankFee - data type text
table - invoiceDetails incDetails - Primary Key - data type auto
number Section - data type text Description - data type text InvcID -
foreign key - data type number
我可以获取最新添加发票的发票ID。但是我仍然遇到数据类型不匹配错误。
double invoiceID = (double)command.ExecuteNonQuery();
long invoiceID = (long)command.ExecuteNonQuery();
任何帮助?