关于datagridview自定义编辑控件的问题

Question

我原来所做的编辑是一个基于textbox的类,现在idatagridvieweditingcontrol是通过一个自定义控件(包含一个textbox和button)来实现的,结果就发现按下字符键,第一个字符就是没有,如输入三个a,那么控件中只显示两个a,也就是按下的第一个键作了编辑的确认键了,不知道为什么

Answer 1

using System;
using System.Windows;
using System.Windows.Forms;
using System.Collections.Generic;
using System.Text;
using System.Data;namespace BaseItems
{
    class CellCommSelEditWS:TbxCommWS, IDataGridViewEditingControl
    {
        DataGridView dataGridView;
        bool valueChanged = false;
        int rowIndex;
        public CellCommSelEditWS()
        {
            //base.EditMode = false;
            base.BorderStyle = BorderStyle.None;
            base.textbox.BorderStyle = BorderStyle.None;
        }
        string _commselid = "";
        public int EditingControlRowIndex
        {
            get { return rowIndex; }
            set { rowIndex = value; }
        }
        protected override void OnTextChanged(EventArgs e)
        {
            base.OnTextChanged(e);
            valueChanged = true;
            this.EditingControlDataGridView.NotifyCurrentCellDirty(true);
        }
        
       
        public bool EditingControlValueChanged
        {
            set { valueChanged = value; }
            get { return valueChanged; }        }
        public object EditingControlFormattedValue
        {
            get
            {
                return this.Text.ToString();
            }
            set
            {
                this.Text = value.ToString();
            }
        }        // Implements the 
        // IDataGridViewEditingControl.GetEditingControlFormattedValue method.
        public object GetEditingControlFormattedValue(DataGridViewDataErrorContexts context)
        {
            return EditingControlFormattedValue;
        }        // Implements the 
        // IDataGridViewEditingControl.ApplyCellStyleToEditingControl method.
        public void PrepareEditingControlForEdit(bool selectAll)
        {
            //i have something to do with prepare
            //initialize commsel;
            //set the value and without uniquecheck
        }
        public void ApplyCellStyleToEditingControl(DataGridViewCellStyle dataGridViewCellStyle)
        {
            this.Font = dataGridViewCellStyle.Font;
        }
        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 false;
            }
        }
        public bool RepositionEditingControlOnValueChange
        {
            get { return true; }
        }
        public DataGridView EditingControlDataGridView
        {
            get { return dataGridView; }
            set { dataGridView = value; }
        }
        public Cursor EditingPanelCursor
        {
            get
            {
                return base.Cursor;
            }
        }
    }
    public class CellCommSelWS : DataGridViewTextBoxCell
    {
        public CellCommSelWS()
            : base()
        {
        }
        CellCommSelEditWS ctl;
        public override void InitializeEditingControl(int rowIndex, object initialFormattedValue, DataGridViewCellStyle dataGridViewCellStyle)
        {
            base.InitializeEditingControl(rowIndex, initialFormattedValue, dataGridViewCellStyle);
            ctl = DataGridView.EditingControl as CellCommSelEditWS;
            ctl.Text = this.Value.ToString();
            //ctl.ConnString = ((commselColumn)base.OwningColumn).ConnString;
            string tid = "";
            //DataRowView drv = (DataRowView)base.OwningRow.DataBoundItem;
            tid = ((GDColumnWS)base.OwningColumn).CommonSelectionID;
            //if (tid != "")
            //{
            //    tid = drv[((GDColumnWS)base.OwningColumn).CommonSelectionID].ToString();
            //}
            //else
            //{
            //    tid = "";
            //}
            //ctl.ConnString = _cn;
            ctl.CommEditID = tid;        }
        public void setSection(string id)
        {
            ctl.CommEditID= id;
        }
        public override Type EditType
        {
            get
            {
                return typeof(CellCommSelEditWS);
            }
        }        public override Type ValueType
        {
            get
            {
                return typeof(string);
            }
        }        public override object DefaultNewRowValue
        {
            get
            {
                return "";
            }
        }
    }
    public class GDColumnWS : DataGridViewTextBoxColumn
    {
        public GDColumnWS()
            : base()
        {
        }
        string _ftid = "";
        public string CommonSelectionID
        {
            set { _ftid = value; }
            get { return _ftid; }
        }
        CellCommSelWS _celledit;
        public override DataGridViewCell CellTemplate
        {
            get
            {
                return _celledit;
            }
            set
            {
                if (value != null && !value.GetType().IsAssignableFrom(typeof(CellCommSelWS)))
                {
                    throw new InvalidCastException("Must be a Common Selection Cell");
                }
                _celledit = (CellCommSelWS)value;
            }
        }
    }}

Answer 2

TbxCommWS是一个TextBox和Button组合成的自定义控件

Answer 3

   void dataGridView1_EditingControlShowing(object sender, 
            DataGridViewEditingControlShowingEventArgs e)
        {
            if (!this.IsKeyPressHandled
                && this.dataGridView1.CurrentCell.ColumnIndex == 
                this.dataGridView1.Columns["MaskColumn"].Index)
            {
                TextBox tb = e.Control as TextBox;
                tb.KeyPress += new KeyPressEventHandler(tb_KeyPress);
                this.IsKeyPressHandled = true;
            }
        }        void tb_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (this.dataGridView1.CurrentCell.ColumnIndex == 
                this.dataGridView1.Columns["MaskColumn"].Index)
            {
                // Prevent the key char to be input in the editing control
                e.Handled = true;                // Set focus to the MaskedTextBox for editing.
                this.maskedTextBoxForEditing.Text = e.KeyChar.ToString();
                this.maskedTextBoxForEditing.Focus();
            }
        }