在DataGridView中添加过滤器行

Question

我使用IDataGridViewEditingControl在DataGridView中实现了一个过滤行。这是我从MSDN http://msdn.microsoft.com/en-us/library/7tas5c80(v=vs.110).aspx

获得的示例代码

public class UserControlCell : DataGridViewTextBoxCell
{
    public UserControlCell()
        : base()
    {

    }

    public override void InitializeEditingControl(int rowIndex, object initialFormattedValue, DataGridViewCellStyle dataGridViewCellStyle)
    {
        // Set the value of the editing control to the current cell value. 
       base.InitializeEditingControl(rowIndex, initialFormattedValue, dataGridViewCellStyle);
       UserControlEditingControl ctl = DataGridView.EditingControl as UserControlEditingControl;

    }

    public override Type EditType
    {
        get { return typeof(UserControlEditingControl); }
    }

    public override Type ValueType
    {
        get { return typeof(String); }
    }

    public override object DefaultNewRowValue
    {
        get { return ""; }
    }
}

class UserControlEditingControl : UserControl1, IDataGridViewEditingControl
 {
    DataGridView dataGridView;
    private bool valueChanged = false;
    int rowIndex;

    // Implements the IDataGridViewEditingControl.EditingControlFormattedValue property. 
    public object EditingControlFormattedValue
    {
        get { return this.textBox1.Text; }            
        set { this.textBox1.Text = value.ToString(); }                       
    }

    // Implements the IDataGridViewEditingControl.GetEditingControlFormattedValue method. 
    public object GetEditingControlFormattedValue(DataGridViewDataErrorContexts context)
    {
        return EditingControlFormattedValue;
    }

    // Implements the  IDataGridViewEditingControl.ApplyCellStyleToEditingControl method. 
    public void ApplyCellStyleToEditingControl(DataGridViewCellStyle dataGridViewCellStyle)
    {
        this.Font = dataGridViewCellStyle.Font;
    }

    // Implements the IDataGridViewEditingControl.EditingControlRowIndex property. 
    public int EditingControlRowIndex
    {
        get { return rowIndex; }
        set { rowIndex = value; }
    }

    // Implements the IDataGridViewEditingControl.EditingControlWantsInputKey method. 
    public bool EditingControlWantsInputKey(Keys key, bool dataGridViewWantsInputKey)
    {
        // Let the DateTimePicker handle the keys listed. 
        switch (key & Keys.KeyCode)
        {
            case Keys.Left:
            case Keys.Up:
            case Keys.Down:
            case Keys.Right:
            case Keys.Home:
            case Keys.End:
            case Keys.PageDown:
            case Keys.PageUp:
                return true;
            default:
                return !dataGridViewWantsInputKey;
        }
    }

    // Implements the IDataGridViewEditingControl.PrepareEditingControlForEdit  method. 
    public void PrepareEditingControlForEdit(bool selectAll)
    {
        // No preparation needs to be done.
    }

    // Implements the IDataGridViewEditingControl.RepositionEditingControlOnValueChange property. 
    public bool RepositionEditingControlOnValueChange
    {
        get { return false; }
    }

    // Implements the IDataGridViewEditingControl.EditingControlDataGridView property. 
    public DataGridView EditingControlDataGridView
    {
        get { return dataGridView; }
        set { dataGridView = value; }
    }

    // Implements the IDataGridViewEditingControl.EditingControlValueChanged property. 
    public bool EditingControlValueChanged
    {
        get { return valueChanged; }
        set { valueChanged = value; }
    }

    // Implements the IDataGridViewEditingControl.EditingPanelCursor property. 
    public Cursor EditingPanelCursor
    {
        get { return base.Cursor; }
    }
}

在其中，UserControl1是一个UserControl，它将在fisrt行的每个单元格中托管。

我的问题是当我在每个过滤单元格中输入任何条件时，所有剩余单元格中出现的条件。那么我该如何解决这个问题？

这是我将过滤器控件分配给网格单元的代码：

DataGridViewRow rows = new DataGridViewRow();
UserControlCell[] textBoxFilterCell = new UserControlCell[3];
for (int i = 0; i < 3; i++)
  {
     textBoxFilterCell[i] = new UserControlCell();                
     rows.Cells.Add(textBoxFilterCell[i]);
  }
dataGridView1.Rows.Add(rows);