未处理的“System.IndexOutOfRangeException”类型的异常出现在 system.data.dll 中。
其他信息: 此 SqlParameterCollection 的 Count=0 的索引 0 无效。
问题出现在这里：
UserName->SelectCommand->Parameters->Item[0]->Value=TBoxUserID->Text;
UserName->Fill(DataSetLogin,S"UserName");
if(this->DataSetLogin->Tables->Item[S"UserName"]->Rows->Count==0)
return;
this->TBoxUserName->Text=this->DataSetLogin->Tables->Item[S"UserName"]->Rows->Item[0]->Item[S"UserName"]->ToString();
以下是声明：（语言是visualC++.net)
using namespace System;
using namespace System::ComponentModel;
using namespace System::Collections;
using namespace System::Windows::Forms;
using namespace System::Data;
using namespace System::Drawing;
private: System::Data::SqlClient::SqlCommand * sqlSelectCommand1;
private: System::Data::SqlClient::SqlConnection * sqlConnection1;
private: My::DataSet1 * DataSetLogin;
private: System::Data::SqlClient::SqlDataAdapter * AdaptorLogin;
private: System::Data::SqlClient::SqlCommand * sqlSelectCommand2;
private: System::Data::SqlClient::SqlCommand * sqlInsertCommand1;
private: System::Data::SqlClient::SqlDataAdapter * UserName;
大家帮忙看看问题出在哪里
