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我的问题仍然没有得到解决，因此我从 C# OleDbDataAdapter 中返回了更新 dbf 文件 [free table -vfp] 的不同问题。

string MyConStr = "Provider=VFPOLEDB.1; Data Source='C:\\Temp'; Persist Security Info=False";

VFPDAp = new OleDbDataAdapter();
VFPDAp.InsertCommand = new OleDbCommand();
VFPDAp.UpdateCommand = new OleDbCommand();

VFPDAp.InsertCommand.CommandText = "insert into my_table1 (my_time,reminder) values(?, ?, ?)";
VFPDAp.UpdateCommand.CommandText = "update my_table1 set my_time=?, reminder=? where sl_no=? ";

VFPDAp.InsertCommand.Connection = OleCon1;
VFPDAp.UpdateCommand.Connection = OleCon1; 

OleDbParameter Par1 = new OleDbParameter("my_time", -1);
Par1.DbType = DbType.String;
Par1.SourceColumn = "my_time";
Par1.ParameterName = "my_time";

OleDbParameter Par2 = new OleDbParameter("reminder", -1);
Par2.DbType = DbType.String;
Par2.SourceColumn = "reminder";
Par2.ParameterName = "reminder";

OleDbParameter Par3 = new OleDbParameter("my_time", -1);
Par3.DbType = DbType.String;
Par3.SourceColumn = "my_time";
Par3.ParameterName = "my_time";

OleDbParameter Par4 = new OleDbParameter("reminder", -1);
Par4.DbType = DbType.String;
Par4.SourceColumn = "reminder";
Par4.ParameterName = "reminder";

VFPDAp.InsertCommand.Parameters.Add(Par1);
VFPDAp.InsertCommand.Parameters.Add(Par2);
VFPDAp.UpdateCommand.Parameters.Add(Par3);
VFPDAp.UpdateCommand.Parameters.Add(Par4);

OleCon1.ConnectionString = MyConStr;
OleCon1.Open();
VFPDAp.Update(VfpTbl);
OleCon1.Close();

感谢您的帮助

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1 回答 1

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您的插入语句有 3 个“？” 但只有 2 个参数

insert into my_table1 (my_time,reminder) values(?, ?, ?)
(should it be 3 columns inserted or 2...)

update my_table1 set my_time=?, reminder=? where sl_no=?

每个 ”？” 需要自己的参数，所以总共需要5个（或通过插入6个）

于 2012-10-05T16:41:20.090 回答