Insert to database MVP C#

Hi ....

I am trying to insert data to database table but i need it check before insert if the inserted data is Exists in database table iam getting this error :

CS0120 An object reference is required for the non-static field, method, or property 'ManageVisitsTypesService.InsertVisitsTypes(int, string, bool, string, int)'

I sure this Method is not Static.

First i have Stored Procedure:

Create procedure [dbo].[Save_Visits_Types]
@VisitTypeID int output,
@VisitTypeName nvarchar (Max),
@VisitTypeStatus bit,
@VisitTypeNotes nvarchar (Max),
@CreatedBy int
As
BEGIN
SET NOCOUNT ON;
If Exists(SELECT 1 FROM dbo.VisitsTypesTbl WHERE VisitTypeID = @VisitTypeID)
BEGIN
Return -3;
END;
If Exists(SELECT 1 FROM dbo.VisitsTypesTbl WHERE VisitTypeName = @VisitTypeName)
BEGIN
Return -4;
END;
INSERT INTO dbo.VisitsTypesTbl (VisitTypeID, VisitTypeName, VisitTypeStatus, VisitTypeNotes, CreatedDate, CreatedDeviceName)
VALUES (@VisitTypeID, @VisitTypeName, @VisitTypeStatus, @VisitTypeNotes, getdate(), HOST_NAME());
Return -2;
END

Then i have Data Access Layer Which i named DBHelper :

//Method To Insert , Update And Delete From Database
public static bool ExcuteData(string SpName, Action method)
{
using (SqlConnection connection = GetConnectionString())
{
try
{
command = new SqlCommand(SpName, connection);
command.CommandType = CommandType.StoredProcedure;
method.Invoke();
connection.Open();
command.ExecuteNonQuery();
connection.Close();
return true;
}
catch (Exception ex)
{
connection.Close();
Console.WriteLine(ex.Message);
return false;
}
finally
{
connection.Close();
}
}
}

Then i have Created Model Class Which contain :

namespace Team_Manager.Models
{
public class ManageVisitsTypesModel
{
public int VisitTypeID { get; set; }
public string VisitTypeName { get; set; }
public bool VisitTypeStatus { get; set; }
public string VisitTypeNotes { get; set; }
public int CreatedBy { get; set; }
}
}

Then i have created the Service Class which contain the insert Method :

//This Method For Insert Paramerters For Visits Types To Database
public SaveResult InsertVisitsTypesParamerter(int VisitTypeID, string VisitTypeName, bool VisitTypeStatus, string VisitTypeNotes, int CreatedBy, SqlCommand command)
{
var pReturnValue = new SqlParameter("@ReturnValue", SqlDbType.Int) { Direction = ParameterDirection.ReturnValue };
command.Parameters.Add("@VisitTypeID", SqlDbType.Int).Value = VisitTypeID;
command.Parameters.Add("@VisitTypeName", SqlDbType.NVarChar).Value = VisitTypeName;
command.Parameters.Add("@VisitTypeStatus", SqlDbType.Bit).Value = VisitTypeStatus;
command.Parameters.Add("@VisitTypeNotes", SqlDbType.NVarChar).Value = VisitTypeNotes;
command.Parameters.Add("@CreatedBy", SqlDbType.Int).Value = CreatedBy;
switch ((int)pReturnValue.Value)
{
case -2: return SaveResult.Ok;
case -3: return SaveResult.DuplicateId;
case -4: return SaveResult.DuplicateName;
default: return SaveResult.UnknownError;
}
}
//This Method For Insert Visits Types To Database
public bool InsertVisitsTypes(int VisitTypeID, string VisitTypeName, bool VisitTypeStatus, string VisitTypeNotes, int CreatedBy)
{
return ExcuteData("Save_Visits_Types", () => InsertVisitsTypesParamerter(VisitTypeID, VisitTypeName, VisitTypeStatus, VisitTypeNotes, CreatedBy, command));
}

And Presenter Class :

class ManageVisitsTypesPresenter
{
IManageVisitsTypes iManageVisitsTypes;
ManageVisitsTypesModel ManageVisitsTypesModel = new ManageVisitsTypesModel();
public ManageVisitsTypesPresenter(IManageVisitsTypes view)
{
iManageVisitsTypes = view;
}
// Connect Between Model And Interface
private void ConnectManageVisitsTypesModelAndInterface()
{
ManageVisitsTypesModel.VisitTypeID = iManageVisitsTypes.VisitTypeID;
ManageVisitsTypesModel.VisitTypeName = iManageVisitsTypes.VisitTypeName;
ManageVisitsTypesModel.VisitTypeStatus = iManageVisitsTypes.VisitTypeStatus;
ManageVisitsTypesModel.VisitTypeNotes = iManageVisitsTypes.VisitTypeNotes;
ManageVisitsTypesModel.CreatedBy = iManageVisitsTypes.CreatedBy;
}
// Insert Visits Types
public void VisitsTypesInsert()
{
if (iManageVisitsTypes.VisitTypeName == "")
{
iManageVisitsTypes.TheError.SetError(iManageVisitsTypes.TheStatus, "Please Type Visit Type");
return;
}
SaveResult saveResult = ManageVisitsTypesService.InsertVisitsTypes(ManageVisitsTypesModel.VisitTypeID, ManageVisitsTypesModel.VisitTypeName, ManageVisitsTypesModel.VisitTypeStatus, ManageVisitsTypesModel.VisitTypeNotes, ManageVisitsTypesModel.CreatedBy);
if (saveResult == SaveResult.DuplicateId)
{
MessageBox.Show("This ID Type Allready Exists");
}
else if (saveResult == SaveResult.DuplicateName)
{
MessageBox.Show("This Type Name Allready Exists");
}
else
{
ConnectManageVisitsTypesModelAndInterface();
GetActiveVisitsTypes();
AutoNumber();
XtraMessageBox.Show(DevExpress.LookAndFeel.UserLookAndFeel.Default, "Visit Type Saved Successflly ...", "Add Visit Type", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}

4 Replies

Know the answer? Post it — somebody with the same question will find it here.

Salem Al5y ago
ManageVisitsTypesService manageVisitsTypesService = new ManageVisitsTypesService();

Also i have create an object but still

thanks for tring to help me
Rajanikant Hawaldar5y ago
if it is allowed to create object of ManageVisitsTypesService class then create object and access that method but you have know what is right what is wrong according to MVP Pattern, i have not used this pattern yet so only telling you.
Salem Al5y ago
Rajanikant Hawaldar

Thanks but i have tried that and still error comming
Rajanikant Hawaldar5y ago
I don't know MVP pattern, but as per error solution is to mark InsertVisitsTypes method as static, your accessing InsertVisitsTypes method ManageVisitsTypesService class level that is the reason your getting error.

Insert to database MVP C#

Rajanikant Hawaldar