Question

我正在ASP / C＃中编写一个页面，我必须使用我创建的表单并将其插入MS Access数据库。使用以下字段设置MS Access数据库：

ID，UserName，Passwrd，FirstName，LastName，Address，Address2，City，州，ZipCode，电子邮件，性别，年龄，ShirtSize，PantSize， EmailSubscribe。

我收到以下错误：

异常详细信息：System.Data.OleDb.OleDbException：没有给出值一个或多个必需参数。

我无法弄清楚哪个参数缺少值。这是堆栈跟踪：

[  OleDbException (0x80040e10): No value given for one or more required parameters.]
   System.Data.OleDb.OleDbCommand.ExecuteCommandTextErrorHandling(OleDbHResult hr) +992156
   System.Data.OleDb.OleDbCommand.ExecuteCommandTextForSingleResult(tagDBPARAMS dbParams, Object& executeResult) +255
   System.Data.OleDb.OleDbCommand.ExecuteCommandText(Object& executeResult) +188
   System.Data.OleDb.OleDbCommand.ExecuteCommand(CommandBehavior behavior, Object& executeResult) +58
   System.Data.OleDb.OleDbCommand.ExecuteReaderInternal(CommandBehavior behavior, String method) +161
   System.Data.OleDb.OleDbCommand.ExecuteNonQuery() +113
   ASP.ado_aspx.SubmitForm(Object sender, EventArgs e) in e:\ectserver\ADELEO10\ado.aspx:165
   System.Web.UI.WebControls.Button.OnClick(EventArgs e) +111
   System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +110
   System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1565

以下是页面背后的代码：

                public void SubmitForm(object sender, EventArgs e)
                {
                    if(Page.IsValid)
                    {
                        string provider = ConfigurationManager.ConnectionStrings["databaseConnString"].ProviderName; 

                        DbProviderFactory factory = DbProviderFactories.GetFactory(provider);

                       //Open Connection
                        DbConnection conn = factory.CreateConnection();

                        //Assign Connection String
                        conn.ConnectionString = ConfigurationManager.ConnectionStrings["databaseConnString"].ConnectionString; 
                        //Connection Open
                        conn.Open();

                        //Initialize Command
                        DbCommand comm = conn.CreateCommand();
                        //Tell command which connection it will use
                        comm.Connection = conn;
                        //Give command SQL to execute
                        comm.CommandText ="Insert into userinfo(UserName, Passwrd, FirstName, LastName, Address, Address2, City, State, ZipCode, Email, Gender, Age, ShirtSize, PantSize, EmailSubscribe) values(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)";                     

                        DbParameter param;

                        param = comm.CreateParameter();
                        param.DbType = DbType.String;
                        param.Direction = ParameterDirection.Input;
                        param.Value = userName.Text;

                        comm.Parameters.Add(param);                     

                        param = comm.CreateParameter();
                        param.DbType = DbType.String;
                        param.Direction = ParameterDirection.Input;
                        param.Value = password.Text;

                        comm.Parameters.Add(param); 

                        param = comm.CreateParameter();
                        param.DbType = DbType.String;
                        param.Direction = ParameterDirection.Input;
                        param.Value = firstName.Text;

                        comm.Parameters.Add(param);                                 

                        param = comm.CreateParameter();
                        param.DbType = DbType.String;
                        param.Direction = ParameterDirection.Input;
                        param.Value = lastName.Text;

                        comm.Parameters.Add(param);

                        param = comm.CreateParameter();
                        param.DbType = DbType.String;
                        param.Direction = ParameterDirection.Input;
                        param.Value = address.Text;

                        comm.Parameters.Add(param); 

                        param = comm.CreateParameter();
                        param.DbType = DbType.String;
                        param.Direction = ParameterDirection.Input;
                        param.Value = address2.Text;

                        comm.Parameters.Add(param); 

                        param = comm.CreateParameter();
                        param.DbType = DbType.String;
                        param.Direction = ParameterDirection.Input;
                        param.Value = city.Text;

                        comm.Parameters.Add(param);

                        param = comm.CreateParameter();
                        param.DbType = DbType.String;
                        param.Direction = ParameterDirection.Input;
                        param.Value = state.Text;

                        comm.Parameters.Add(param);

                        param = comm.CreateParameter();
                        param.DbType = DbType.Int32;
                        param.Direction = ParameterDirection.Input;
                        param.Value = Int32.Parse(zipCode.Text);

                        comm.Parameters.Add(param);

                        param = comm.CreateParameter();
                        param.DbType = DbType.String;
                        param.Direction = ParameterDirection.Input;
                        param.Value = email.Text;

                        comm.Parameters.Add(param);

                        param = comm.CreateParameter();
                        param.DbType = DbType.String;
                        param.Direction = ParameterDirection.Input;
                        param.Value = GenderRadioGroup.Text;

                        comm.Parameters.Add(param);

                        param = comm.CreateParameter();
                        param.DbType = DbType.Int32;
                        param.Direction = ParameterDirection.Input;
                        param.Value = Int32.Parse(age.Text);

                        comm.Parameters.Add(param);

                        param = comm.CreateParameter();
                        param.DbType = DbType.String;
                        param.Direction = ParameterDirection.Input;
                        param.Value = drpShirtSizeCategory.SelectedValue;

                        comm.Parameters.Add(param);

                        param = comm.CreateParameter();
                        param.DbType = DbType.String;
                        param.Direction = ParameterDirection.Input;
                        param.Value = drpPantSizeCategory.SelectedValue;

                        comm.Parameters.Add(param);

                        param = comm.CreateParameter();
                        param.DbType = DbType.String;
                        param.Direction = ParameterDirection.Input;
                        param.Value = EmailRadioGroup.Text;

                        comm.Parameters.Add(param);

                        //Execute command get back result via reader
                        int totalCount = comm.ExecuteNonQuery();

                        DbCommand comm2 = conn.CreateCommand();
                        comm2.CommandText = "Select @@Identity";
                        comm2.Connection = conn;

                        String id = comm2.ExecuteScalar().ToString();
                        conn.Close();

                        lblMessage.Text = "ID of User Added = " +id;
                    }
                }

感谢任何帮助。谢谢！

Answer 1

试试这个

string provider = ConfigurationManager.ConnectionStrings["databaseConnString"].ProviderName; 

        DbProviderFactory factory = DbProviderFactories.GetFactory(provider);

       //Open Connection
        DbConnection conn = factory.CreateConnection();

        //Assign Connection String
        conn.ConnectionString = ConfigurationManager.ConnectionStrings["databaseConnString"].ConnectionString; 
        //Connection Open
        conn.Open();

        //Initialize Command
        DbCommand comm = conn.CreateCommand();
        //Tell command which connection it will use
        comm.Connection = conn;
        //Give command SQL to execute
        comm.CommandText ="Insert into userinfo(UserName, Passwrd, FirstName, LastName, Address, Address2, City, State, ZipCode, Email, Gender, Age, ShirtSize, PantSize, EmailSubscribe) values(@UserName, @Passwrd, @FirstName, @LastName, @Address, @Address2, @City, @State, @ZipCode, @Email, @Gender, @Age, @ShirtSize, @PantSize, @EmailSubscribe)";                     


        SqlParameter userName = new SqlParameter("@UserName", SqlDbType.VarChar);
        userName .Value = userName.Text;
        comm.Parameters.Add(userName);

        SqlParameter password = new SqlParameter("@Passwrd", SqlDbType.VarChar);
        password .Value = password.Text;
        comm.Parameters.Add(password);

        SqlParameter firstName = new SqlParameter("@FirstName", SqlDbType.VarChar);
        firstName .Value = FirstName.Text;
        comm.Parameters.Add(firstName);

        SqlParameter lastName = new SqlParameter("@LastName", SqlDbType.VarChar);
        lastName .Value = lastName.Text;
        comm.Parameters.Add(lastName);


        SqlParameter address = new SqlParameter("@Address", SqlDbType.VarChar);
        address.Value = address.Text;
        comm.Parameters.Add(address);

        SqlParameter address2 = new SqlParameter("@Address2", SqlDbType.VarChar);
        address2.Value = address2.Text;
        comm.Parameters.Add(address2); 

        SqlParameter city = new SqlParameter("@City", SqlDbType.VarChar);
        city.Value = city.Text;
        comm.Parameters.Add(city); 

        SqlParameter state = new SqlParameter("@State", SqlDbType.VarChar);
        state.Value = state.Text;
        comm.Parameters.Add(state); 

        SqlParameter zipCode = new SqlParameter("@ZipCode", SqlDbType.VarChar);
        zipCode.Value = zipCode.Text;
        comm.Parameters.Add(zipCode);

        SqlParameter email = new SqlParameter("@Email", SqlDbType.VarChar);
        email.Value = email.Text;
        comm.Parameters.Add(email);

        SqlParameter genderRadioGroup = new SqlParameter("@GenderRadioGroup", SqlDbType.VarChar);
        genderRadioGroup.Value = genderRadioGroup.Text;
        comm.Parameters.Add(genderRadioGroup);

        SqlParameter age = new SqlParameter("@Age", SqlDbType.VarChar);
        age.Value = age.Text;
        comm.Parameters.Add(age);

        SqlParameter drpShirtSizeCategory = new SqlParameter("@ShirtSize", SqlDbType.VarChar);
        drpShirtSizeCategory.Value = drpShirtSizeCategory.Text;
        comm.Parameters.Add(drpShirtSizeCategory);

        SqlParameter drpPantSizeCategory = new SqlParameter("@PantSize", SqlDbType.VarChar);
        drpPantSizeCategory.Value = drpPantSizeCategory.Text;
        comm.Parameters.Add(drpPantSizeCategory);

        SqlParameter emailRadioGroup = new SqlParameter("@EmailSubscribe", SqlDbType.VarChar);
        emailRadioGroup.Value = EmailRadioGroup.Text;
        comm.Parameters.Add(emailRadioGroup);



        //Execute command get back result via reader
        int totalCount = comm.ExecuteNonQuery();

        DbCommand comm2 = conn.CreateCommand();
        comm2.CommandText = "Select @@Identity";
        comm2.Connection = conn;

        String id = comm2.ExecuteScalar().ToString();
        conn.Close();

        lblMessage.Text = "ID of User Added = " +id;

Answer 2

为了确保您拥有正确的身份，最好拨打IDENT_CURRENT（'TableName'）

DbCommand comm2 = conn.CreateCommand();
comm2.CommandText = "Select IDENT_CURRENT('userinfo')";
comm2.Connection = conn;

String id = comm2.ExecuteScalar().ToString();
conn.Close();

请参阅Here以获取解释。

从ASP / C＃Web窗体中插入Access数据库中的数据

2 个答案: