asp.net Accee数据库连接不稳定解决方案

private int GetReturnValue(string sStr, string conn) {
OleDbConnection odbconn = AccessHelp(conn);
OleDbCommand odbcmd = new OleDbCommand(sStr, odbconn);
return odbcmd.ExecuteNonQuery();
}

public int wsbm(string[] str) {
StringBuilder sb=new StringBuilder();
sb.Append("INSERT INTO ").Append("wsbm(zy, studentname, parentname)");
sb.Append(" VALUES (");
sb.Append("'" + str[0] + "', '" + str[1] + "', '" + str[2] + "'");
sb.Append(")");
return GetReturnValue(sb.ToString(), "ODBconn");
}

protected void Bttj_Click(object sender, EventArgs e) {
string[] sStr = new string[] {
this.ddlzy.SelectedItem.Text,
this.tbName.Text,
this.tbbb.Text,
};
if (ad.wsbm(sStr) > 0) {
Response.Write("<script>alert('插入成功！')</script>");
}
}

private OleDbConnection AccessHelp(string str){
OleDbConnection odbconn = new OleDbConnection();
try{
string sStr2 = "Provider=Microsoft.Jet.OLEDB.4.0;Persist Security Info=false;Data Source=" + Server.MapPath(@"App_Data\#fdaeg35@#gds.mdb");
odbconn.ConnectionString = sStr2;
if (odbconn.State == ConnectionState.Closed){
odbconn.Open();
}
else{
sStr2 = "DBQ=" + Server.MapPath(@"App_Data\#fdaeg35@#gds.mdb") + ";DefaultDir=;DRIVER={Microsoft Access Driver (*.mdb)};";
odbconn.ConnectionString = sStr2;
if (odbconn.State == ConnectionState.Closed){
odbconn.Open();
}
}
}
catch{
try{
//odbconn = new OleDbConnection(ConfigurationManager.ConnectionStrings[str].ConnectionString);
odbconn.ConnectionString = ConfigurationManager.ConnectionStrings[str].ConnectionString;
if (odbconn.State == ConnectionState.Closed){
odbconn.Open();
}
}
catch{
string sStr1 = @"Provider=Microsoft.Jet.OLEDB.4.0;Persist Security Info=false;Data Source=.\App_Data\#fdaeg35@#gds.mdb";
//odbconn = new OleDbConnection(sStr1);
odbconn.ConnectionString = sStr1;
if (odbconn.State == ConnectionState.Closed){
odbconn.Open();
}
}
}
return odbconn;
}

private OleDbConnection AccessHelp(string str) {
OleDbConnection odbconn = new OleDbConnection();
try {
string sStr2 = "Provider=Microsoft.Jet.OLEDB.4.0;Persist Security Info=false;connection timeout=120;Data Source=" + Server.MapPath(@"App_Data\#fdaeg35@#gds.mdb");
odbconn.ConnectionString = sStr2;
if (odbconn.State == ConnectionState.Closed) {
odbconn.Open();
}
else{
sStr2 = "DBQ=" + Server.MapPath(@"App_Data\#fdaeg35@#gds.mdb") + ";DefaultDir=;DRIVER={Microsoft Access Driver (*.mdb)};connection timeout=120;";
odbconn.ConnectionString = sStr2;
if (odbconn.State == ConnectionState.Closed) {
odbconn.Open();
}
}
}
catch {
try {
//odbconn = new OleDbConnection(ConfigurationManager.ConnectionStrings[str].ConnectionString);
odbconn.ConnectionString = ConfigurationManager.ConnectionStrings[str].ConnectionString;
if (odbconn.State == ConnectionState.Closed) {
odbconn.Open();
}
}
catch {
string sStr1 = @"Provider=Microsoft.Jet.OLEDB.4.0;Persist Security Info=false;connection timeout=120;Data Source=.\App_Data\#fdaeg35@#gds.mdb";
//odbconn = new OleDbConnection(sStr1);
odbconn.ConnectionString = sStr1;
if (odbconn.State == ConnectionState.Closed) {
odbconn.Open();
}
}
}
return odbconn;
}

private static void PrepareCommand(OldbCommand command, OldbConnection connection, OldbTransaction transaction, CommandType commandType, string commandText, SqlParameter[] commandParameters, out bool mustCloseConnection) {
if (command == null) throw new ArgumentNullException("command");
if (commandText == null || commandText.Length == 0) throw new ArgumentNullException("commandText");
// If the provided connection is not open, we will open it
if (connection.State != ConnectionState.Open) {
mustCloseConnection = true;
connection.Open();
}
else {
mustCloseConnection = false;
}
// Associate the connection with the command
command.Connection = connection;
// Set the command text (stored procedure name or SQL statement)
command.CommandText = commandText;
//Set the command Time
command.CommandTimeout = 60;
// If we were provided a transaction, assign it
if (transaction != null) {
if (transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
command.Transaction = transaction;
}
// Set the command type
command.CommandType = commandType;
// Attach the command parameters if they are provided
if (commandParameters != null) {
AttachParameters(command, commandParameters);
}
return;
}