如何在DataGridView中以编程方式设置单元格值?

DataGridView DataBoundItem DataGridViewRow

MyObject obj = (MyObject)dataGridView.CurrentRow.DataBoundItem;
obj.MyProperty = newValue;

INotifyPropertyChanged

dataGridView1[1,1].Value="tes";

    DataGridViewColumn c = new DataGridViewColumn();
    DataGridViewCell cell = new DataGridViewTextBoxCell();

    c.CellTemplate = cell;
    c.HeaderText = "added";
    c.Name = "added";
    c.Visible = true;
dgv.Columns.Insert(0, c); 

foreach (DataGridViewRow row in dgv.Rows)
{if (row.Cells[7].Value.ToString()=="1")
row.Cells[0].Value = "number one"; }

dataGridView1.ReadOnly = false; //Before modifying, it is required.
dataGridView1.Rows.Add(); //Inserting first row if yet there is no row, first row number is '0'
dataGridView1.Rows[0].Cells[0].Value = "Razib, this is 0,0!"; //Setting the leftmost and topmost cell's value (Not the column header row!)
dataGridView1[1, 0].Value = "This is 0,1!"; //Setting the Second cell of the first row!

注:

你记得吗 refresh

datagridview.refresh();

使用sql数据适配器更新数据等

mydatgridview.Rows[x].Cells[x].Value="test"
mydatagridview.enabled = false 
mydatagridview.enabled = true 

我尝试了很多方法,唯一有效的方法是UpdateCellValue:

dataGridView.Rows[rowIndex].Cells[columnIndex].Value = "New Value";
dataGridView.UpdateCellValue(columnIndex, rowIndex);

dataGridView.CurrentCell.Value = newValue;

dataGridView.EndEdit();

dataGridView.CurrentCell.Value = newValue;

dataGridView.EndEdit();

Dim selectedRow As DataRowView
selectedRow = dg.Rows(dg.CurrentCell.RowIndex).DataBoundItem
selectedRow("MyProp") = "myValue"
dg.NotifyCurrentCellDirty(True)

String

DataGridViewName.Rows[0].Cells[0].Value = 1;

DataGridView DataSource = x

(YourRow.DataBoundItem as DataRowView).Row['YourColumn'] = NewValue;

Private _currentDataView as DataView

Public Sub SetCellValue(ByVal value As String)
    Dim dataView As DataView = _currentDataView

    For i As Integer = 0 To dataView.Count - 1
        If dataView(i).Row.Item("projID").ToString.Equals("139") Then
            dataView(i).Row.Item("Comment") = value
            Exit For ' Exit early to save performance
        End If
    Next
End Sub

这是我的示例——数据源最初是DataTable,我将其传输到List,然后创建BindingList。然后,我创建了BindingSource,并使用BindingList作为BindingSource的数据源。最后,DataGridView中的DataSource使用此BindingSource。

 sp_Select_PersonTableAdapter adapter = new sp_Select_PersonTableAdapter();

 DataTable tbl = new DataTable();
 tbl.Merge(adapter.GetData());

 List<Person> list = tbl.AsEnumerable().Select(x => new Person
 {
     Id = (Int32) (x["Id"]),
     Ime = (string) (x["Name"] ?? ""),
     Priimek = (string) (x["LastName"] ?? "")
 }).ToList();

 BindingList<Person> bindingList = new BindingList<Person>(list);

 BindingSource bindingSource = new BindingSource();
 bindingSource.DataSource = bindingList;
 dgvPerson.DataSource = bindingSource;

public class Person : INotifyPropertyChanged
    {
        private int _id;
        private string _name;
        private string _lastName;

        public int Id
        {
            get { return _id; }
            set
            {
                if (value != _id)
                {
                    _id = value;
                    OnPropertyChanged();
                }
            }
        }
        public string Name
        {
            get { return _name; }
            set
            {
                if (value != _name)
                {
                    _name = value;
                    OnPropertyChanged();
                }
            }
        }
        public string LastName
        {
            get { return _lastName; }
            set
            {
                if (value != _lastName)
                {
                    _lastName= value;
                    OnPropertyChanged();
                }
            }
        }
        public event PropertyChangedEventHandler PropertyChanged;

        [NotifyPropertyChangedInvocator]
        protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
        {
            PropertyChangedEventHandler handler = PropertyChanged;
            if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName));
        }

    }

http://msdn.microsoft.com/en-us/library/system.componentmodel.inotifypropertychanged(v=vs.110).aspx

private void btn_Addtoreciept_Click(object sender, EventArgs e)
{            
    serial_number++;
    dataGridView_inventory.Rows[serial_number - 1].Cells[0].Value = serial_number;
    dataGridView_inventory.Rows[serial_number - 1].Cells[1].Value =comboBox_Reciept_name.Text;
    dataGridView_inventory.Rows[serial_number - 1].Cells[2].Value = numericUpDown_recieptprice.Value;
    dataGridView_inventory.Rows[serial_number - 1].Cells[3].Value = numericUpDown_Recieptpieces.Value;
    dataGridView_inventory.Rows[serial_number - 1].Cells[4].Value = numericUpDown_recieptprice.Value * numericUpDown_Recieptpieces.Value;
    numericUpDown_RecieptTotal.Value = serial_number;
}