在datagridview中显示 [英] Displaying in datagridview

问题描述

我的问题是关于datagridview。我用这个源代码创建了一个类ctsContacts：

my question is about the datagridview. I create a class ctsContacts with this source code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
namespace TestingListe
{
    class ctsContacts:lstContacts
    {
        private int _numero;
 
        public int Numero
        {
            get { return _numero; }
            set { _numero = value; }
        }
 
        private string _nom;
 
        public string Nom
        {
            get { return _nom; }
            set { _nom = value; }
        }
        private string _prenom;
 
        public string Prenom
        {
            get { return _prenom; }
            set { _prenom = value; }
        }
        private string _message;
 
        public string Message
        {
            get { return _message; }
            set { _message = value; }
        }
 
 
        public ctsContacts()
        {
 
        }
 
        public ctsContacts(int numero, string nom,string prenom,string message)
        {
            this.Numero = numero;
            this.Nom = nom;
            this.Prenom = prenom;
            this.Message = message;
        }
 
        public bool recherche(int num)
        {
            foreach (ctsContacts search in ct)
            {
                if (search.Numero == num)
                {
                    return false;
                }
 
            }
            return true;
 
        }
 
        public bool Ajouter(ctsContacts ctn)
        {
            if (this.recherche(ctn.Numero) == true)
            {
                ct.Add(ctn);
                return true;
            }
            return false;
        }
 
    }

此类继承另一个摘要包含列表的类

This class inherits another abstract class that contains a list

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
namespace TestingListe
{
    class lstContacts
    {
        public static List<ctsContacts> ct = new List<ctsContacts>();
        public lstContacts()
        {
 
        }
 
    }

然后在联系表格中添加按钮写这个源代码

and then in the contact form and add button at this writing source code

private void btnajouter_Click(object sender, EventArgs e)
        {
            ctsContacts contact = new ctsContacts();
            contact.Numero = int.Parse(txtnumero.Text);
            contact.Nom = txtNom.Text;
            contact.Prenom = txtPrenom.Text;
            contact.Message = txtmesssage.Text;
 
            contact.Ajouter(contact);
 
            dgvcontacts.DataSource = null;
 
            dgvcontacts.DataSource = ctsContacts.ct;

问题是在datagridview显示右侧复制标题。



显示



我的尝试：



i尝试使用此代码：

the problem is at the datagridview display that copy header right.

display

What I have tried:

i try to the code with this:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
namespace TestingListe
{
    public class ctsContact
    {
        private int _numero;
 
        public int Numero
        {
            get { return _numero; }
            set { _numero = value; }
        }
 
        private string _nom;
 
        public string Nom
        {
            get { return _nom; }
            set { _nom = value; }
        }
        private string _prenom;
 
        public string Prenom
        {
            get { return _prenom; }
            set { _prenom = value; }
        }
        private string _message;
 
        public string Message
        {
            get { return _message; }
            set { _message = value; }
        }
 
 
        public ctsContact()
        {
 
        }
 
        public ctsContact(int numero, string nom,string prenom,string message)
        {
            this.Numero = numero;
            this.Nom = nom;
            this.Prenom = prenom;
            this.Message = message;
        }
 
    }
    public static class ctsContacts
    {
        public static List<ctsContact> ct = new List<ctsContact>();
        public static bool recherche(int num)
        {
            foreach (ctsContact search in ct)
            {
                if (search.Numero == num)
                {
                    return false;
                }
 
            }
            return true;
 
        }
 
        public static bool Ajouter(ctsContact ctn)
        {
            if (recherche(ctn.Numero) == true)
            {
                ct.Add(ctn);
                return true;
            }
            return false;
        }
    }
}

和按钮ajouter与此：

and the button ajouter with this:

private void btnajouter_Click(object sender, EventArgs e)
        {
            ctsContact contact = new ctsContact();
            contact.Numero = int.Parse(txtnumero.Text);
            contact.Nom = txtNom.Text;
            contact.Prenom = txtPrenom.Text;
            contact.Message = txtmesssage.Text;
 
            ctsContacts.Ajouter(contact);
 
            dgvcontacts.DataSource = null;
 
            dgvcontacts.DataSource = ctsContacts.ct;

我有同样的问题

but i have the same problem

推荐答案

我复制了你的代码（带有轻微的重新格式化）并且它正确执行。



请注意，txtmesssage是txtmessage的拼写错误。所以问题是，这段代码实际编译了吗？



我认为你在命名变量方面存在一些严重问题。表格的变量声明：

I reproduced your code (with minor reformatting) and it executes correctly.

Note that "txtmesssage" is an incorrect spelling of "txtmessage". So the question is, "Did this code actually compile?"

I think that you have some serious problems with naming variables. Also the variable declarations of the form:

private int _numero;

public int Numero
    {
    get     { return _numero;     }
    set     { _numero = value;     }
    }

应该由IMO代替



public int Numero {get;组; }



你的LOC大幅下降。



表格的布尔测试



if（recherche（ctn.Numero）== true）



应替换为



if（recherche（ctn.Numero））



以下是您重写的代码有效。没有实质性的编码更改：

should, IMO, be replaced by something like

public int Numero { get; set; }

You get a significant decrease in LOC.

The bool test of the form

if ( recherche ( ctn.Numero ) == true )

should be replaced by

if ( recherche ( ctn.Numero ) )

The following is your code rewritten that works. There were no substantive coding changes:

using System;
using System.Collections.Generic;
using System.Windows.Forms;

namespace TestingListe
    {

    // *************************************************** class Form1
    
    public partial class Form1 : Form
        {
        
        // ***************************************************** Form1
        
        public Form1 ( )
            {
            InitializeComponent ( );
            }

        // ****************************************** btnajouter_Click
        
        private void btnajouter_Click ( object    sender, 
                                        EventArgs e )
            {
            Contact contact = new Contact ( );
            
            contact.Numero = int.Parse ( txtnumero.Text );
            contact.Nom = txtNom.Text;
            contact.Prenom = txtPrenom.Text;
//            contact.Message = txtmesssage.Text; // txtmesssage???
            contact.Message = txtmessage.Text; // 

            Contacts.Ajouter ( contact );

            dgvcontacts.DataSource = null;

            dgvcontacts.DataSource = Contacts.ct;
            }

        }  // class Form1

    // ************************************************* class Program
    
    static class Program
        {

        [STAThread]
        static void Main ( )
            {
            Application.EnableVisualStyles ( );
            Application.SetCompatibleTextRenderingDefault ( false );
            Application.Run ( new Form1 ( ) );
            }

        } // class Program

    // ************************************************* class Contact
    
    public class Contact
        {
        public int Numero { get; set; }
        public string Nom { get; set; }
        public string Prenom { get; set; }
        public string Message { get; set; }

        // *************************************************** Contact
        
        public Contact ( )
            {
 
            }
 
        // *************************************************** Contact
        
        public Contact ( int    numero, 
                         string nom,
                         string prenom,
                         string message )
            {
            
            this.Numero = numero;
            this.Nom = nom;
            this.Prenom = prenom;
            this.Message = message;
            }
 
        }
        
    // ************************************************ class Contacts
    
    public static class Contacts
        {
        public static List<contact> ct = new List<contact> ( );
        
        // ************************************************* recherche
        
        public static bool recherche ( int num )
            {
            
            foreach ( Contact search in ct )
                {
                if ( search.Numero == num )
                    {
                    return false;
                    }
 
                }
            return true;
 
            }
 
        // *************************************************** Ajouter
        
        public static bool Ajouter ( Contact ctn )
            {
            if ( recherche ( ctn.Numero ) == true )
                {
                ct.Add(ctn);
                return true;
                }
            return false;
            }
        
        } // class Contacts
        
    } // namespace TestingListe

</contact></contact>

希望有所帮助。

Hope that helps.

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