У меня возникли проблемы с загрузкой datagridview с двумя столбцами. Форма с Datagridview и 1 кнопка.Заполнение datagridview winforms .net 4.0
отдел (текст) EmployeesByDpt (Combo)
У меня есть форма с DataGridView и Button (Load), когда я нажимаю загрузите DataGridView должен быть заполнен. Нажатие на Employee Combo должно отображать всех сотрудников, принадлежащих к определенному отделу.
я не могу заставить его работать, ниже того, что я сделал,
Есть предложения? На данный момент ничего не показывает. Благодаря
Код (для меня простотой поставить все вместе)
public partial class Form2 : Form
{
Repository repository;
readonly DataGridViewTextBoxColumn colDepartment=new DataGridViewTextBoxColumn();
readonly DataGridViewComboBoxColumn colComboEmployeesByDpt = new DataGridViewComboBoxColumn();
public Form2()
{
InitializeComponent();
repository = new Repository();
SetupDataGridView();
}
private void SetupDataGridView()
{
dataGridView1.EditingControlShowing += OnEditingControlShowing;
dataGridView1.CellValueChanged += OnCellsValueChanged;
dataGridView1.AutoGenerateColumns = false;
colDepartment.DataPropertyName = "Name";
colDepartment.HeaderText = "Department Name";
colComboEmployeesByDpt.DataPropertyName = "Employees";
colComboEmployeesByDpt.HeaderText = "Employees";
colComboEmployeesByDpt.DisplayMember = "FullName";
//colComboEmployeesByDpt.DataSource = "FullName";
dataGridView1.Columns.AddRange(new DataGridViewColumn[] { colDepartment ,colComboEmployeesByDpt});
}
private void OnCellsValueChanged(object sender, DataGridViewCellEventArgs e)
{
}
private void OnEditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
if (dataGridView1.CurrentCell.ColumnIndex == colDepartment.Index)
{
var control = e.Control as DataGridViewComboBoxEditingControl;
if (control != null)
{
var bs = control.DataSource as BindingSource;
if (bs != null)
{
var comboBox = e.Control as ComboBox;
BindingList<Employee> employees = repository.GetEmployeeByDepartments(control.Text);
comboBox.DataSource = employees;
object employeeValue = dataGridView1.Rows[dataGridView1.CurrentCell.RowIndex].Cells[colComboEmployeesByDpt.Index].Value;
if (employeeValue == DBNull.Value || employeeValue == null)
if (dataGridView1.CurrentCell.Value != DBNull.Value && dataGridView1.CurrentCell.Value != null)
{
control.SelectedValue = dataGridView1.CurrentCell.Value;
}
}
}
}
}
private void btnLoad_Click(object sender, EventArgs e)
{
BindingList<Department> departments = repository.GetDepartments();
dataGridView1.DataSource = departments;
dataGridView1.Refresh();
}
}
public class Department
{
public Department()
{
Employees=new BindingList<Employee>();
}
public string Name { get; set; }
public BindingList<Employee> Employees { get; set; }
}
public class Employee
{
public string FullName { get; set; }
}
public class Repository
{
public BindingList<Department> GetDepartments()
{
var departments=new BindingList<Department>();
departments.Add(new Department{Name = "Food"});
departments.Add(new Department{Name = "Travel"});
departments.Add(new Department{Name = "Beauty"});
return departments;
}
public BindingList<Employee> GetEmployeeByDepartments(string name)
{
var employees = new BindingList<Employee>();
switch (name)
{
case "Food":
employees.Add(new Employee { FullName = "Jim Bloggs1" });
employees.Add(new Employee { FullName = "Jim Bloggs2" });
break;
case "Travel":
employees.Add(new Employee { FullName = "Marc Smith1" });
employees.Add(new Employee { FullName = "Marc Smith2" });
break;
case "Beauty":
employees.Add(new Employee { FullName = "Mario XXX1" });
employees.Add(new Employee { FullName = "Mario XXX2" });
break;
}
return employees;
}
}
Привет, спасибо за ваш ответ «Databind», похоже, не является методом на datagridview. – developer9969
В winforms нет databind – developer9969
@MethodMan это приложение WinForms, не нужно иметь метод DataBind – Steve