C# DataGridViewDataErrorContexts类代码示例

    // ========================================================================
    // Methods

    #region === Methods

    /// <summary>
    ///   Gets the formatted value of the cell's data.
    /// </summary>
    /// <returns>
    ///   The value.
    /// </returns>
    /// <param name = "value">The value to be formatted. </param>
    /// <param name = "rowIndex">The index of the cell's parent row. </param>
    /// <param name = "cellStyle">The <see cref = "T:System.Windows.Forms.DataGridViewCellStyle" /> in effect for the cell.</param>
    /// <param name = "valueTypeConverter">A <see cref = "T:System.ComponentModel.TypeConverter" /> associated with the value type that provides custom conversion to the formatted value type, or null if no such custom conversion is needed.</param>
    /// <param name = "formattedValueTypeConverter">A <see cref = "T:System.ComponentModel.TypeConverter" /> associated with the formatted value type that provides custom conversion from the value type, or null if no such custom conversion is needed.</param>
    /// <param name = "context">A bitwise combination of <see cref = "T:System.Windows.Forms.DataGridViewDataErrorContexts" /> values describing the context in which the formatted value is needed.</param>
    /// <exception cref = "T:System.Exception">Formatting failed and either there is no handler for the <see cref = "E:System.Windows.Forms.DataGridView.DataError" /> event of the <see cref = "T:System.Windows.Forms.DataGridView" /> control or the handler set the <see cref = "P:System.Windows.Forms.DataGridViewDataErrorEventArgs.ThrowException" /> property to true. The exception object can typically be cast to type <see cref = "T:System.FormatException" /> for type conversion errors or to type <see cref = "T:System.ArgumentException" /> if <paramref name = "value" /> cannot be found in the <see cref = "P:System.Windows.Forms.DataGridViewComboBoxCell.DataSource" /> or the <see cref = "P:System.Windows.Forms.DataGridViewComboBoxCell.Items" /> collection. </exception>
    protected override object GetFormattedValue(object value, int rowIndex, ref DataGridViewCellStyle cellStyle,
                                                TypeConverter valueTypeConverter,
                                                TypeConverter formattedValueTypeConverter,
                                                DataGridViewDataErrorContexts context)
    {
      return value;
    }

        protected override object GetFormattedValue(object value,
           int rowIndex, ref DataGridViewCellStyle cellStyle,
           TypeConverter valueTypeConverter,
           TypeConverter formattedValueTypeConverter,
           DataGridViewDataErrorContexts context)
        {
            object returnVal = String.Empty;

            if (value != null)
            {
                if (value.GetType() == typeof(byte[]))
                    returnVal = BitConverter.ToString((byte[])value);
                else if (value.GetType() == typeof(byte))
                    returnVal = BitConverter.ToString(new byte[] { (byte)value });
                else if (value.GetType() == typeof(int))
                    returnVal = BitConverter.ToString(BitConverter.GetBytes(((int)value)),0);
                else if (value.GetType() == typeof(uint))
                    returnVal = BitConverter.ToString(BitConverter.GetBytes(((uint)value)), 0);
                else if (value.GetType() == typeof(short))
                    returnVal = BitConverter.ToString(BitConverter.GetBytes(((short)value)), 0);
                else if (value.GetType() == typeof(ushort))
                    returnVal = BitConverter.ToString(BitConverter.GetBytes(((ushort)value)), 0);
            }
            return returnVal;
        }

        protected override object GetFormattedValue(object value, int rowIndex, ref DataGridViewCellStyle cellStyle, System.ComponentModel.TypeConverter valueTypeConverter, System.ComponentModel.TypeConverter formattedValueTypeConverter, DataGridViewDataErrorContexts context)
        {
            Guid obj = (Guid) value;
            string val = PaymentController.GetInstance().GetCustomer(obj).ToString();

            return val;
        }

 protected override object GetFormattedValue(object value, int rowIndex, ref DataGridViewCellStyle cellStyle, TypeConverter valueTypeConverter, TypeConverter formattedValueTypeConverter, DataGridViewDataErrorContexts context)
 {
     isVisualStyled = VisualStyleInformation.IsEnabledByUser & VisualStyleInformation.IsSupportedByOS;
     if (value == null)
     {
         return emptyImage;
     }
     float percentage = (float)((int)value);
     if (percentage == 0)
         return emptyImage;
     else
     {
         contentGraphics.Clear(Color.Transparent);
         float drawedPercentage = percentage > 100 ? 100 : percentage;
         if (isVisualStyled)
         {
             bigProgressRect.Width = (int)(66 * drawedPercentage / 100.0f);
             ProgressBarRenderer.DrawHorizontalBar(contentGraphics, bigBorderRect);
             ProgressBarRenderer.DrawHorizontalChunks(contentGraphics, bigProgressRect);
         }
         else
         {
             progressRect.Width = (int)(66 * drawedPercentage / 100.0f);
             contentGraphics.DrawRectangle(blackPen, borderRect);
             contentGraphics.FillRectangle(lightGreenBrush, progressRect);
         }
         contentGraphics.DrawString(percentage.ToString("0.00") + "%", this.DataGridView.Font, foreColor, 10, 5);
     }
     return contentImage;
 }

        protected override object GetFormattedValue(object value, int rowIndex, ref DataGridViewCellStyle cellStyle, System.ComponentModel.TypeConverter valueTypeConverter, System.ComponentModel.TypeConverter formattedValueTypeConverter, DataGridViewDataErrorContexts context)
        {
            if (value == DBNull.Value || value == null)
                return "";

            return RealmSynergy.FromSeries((uint)value).Text;
        }

        protected override object GetFormattedValue(object value,
            int rowIndex, ref DataGridViewCellStyle cellStyle,
            TypeConverter valueTypeConverter,
            TypeConverter formattedValueTypeConverter,
            DataGridViewDataErrorContexts context)
        {
            if (value == null)
                value = 0;

            int progressVal = (int)value;

            if (progressVal > maxVal)
                progressVal = maxVal;
            if (progressVal < minVal)
                progressVal = minVal;

            Bitmap bmp = new Bitmap(OwningColumn.Width - margin, OwningRow.Height - margin);
            Bitmap bmptxt = new Bitmap(OwningColumn.Width, OwningRow.Height);

            pb.Height = bmp.Height;
            pb.Width = bmp.Width;

            pb.BackColor = System.Drawing.Color.Transparent;
            pb.BackgroundColor = System.Drawing.Color.FromArgb(((System.Byte)(100)), ((System.Byte)(201)), ((System.Byte)(201)), ((System.Byte)(201)));
            pb.StartColor = this.startColor;
            pb.EndColor = this.endColor;
            //pb.HighlightColor = System.Drawing.Color.Orange;
            pb.TabIndex = 0;

            pb.Value = progressVal;
            pb.Update();
            pb.Invalidate();

            lbl.AutoSize = false;
            lbl.TextAlign = ContentAlignment.MiddleCenter;
            lbl.Height = bmptxt.Height;
            lbl.Width = bmptxt.Width;

            if (!this.Selected)
            {
                lbl.ForeColor = cellStyle.ForeColor;
                lbl.BackColor = cellStyle.BackColor;
            }
            else
            {
                lbl.ForeColor = cellStyle.SelectionForeColor;
                lbl.BackColor = cellStyle.SelectionBackColor;
            }

            pb.DrawToBitmap(bmp, pb.ClientRectangle);

            lbl.Text = String.Format("{0}%", progressVal);
            lbl.Image = bmp;
            lbl.ImageAlign = ContentAlignment.MiddleCenter;
            lbl.DrawToBitmap(bmptxt, lbl.ClientRectangle);

            return bmptxt;
        }

 protected override object GetFormattedValue(object value, int rowIndex, ref DataGridViewCellStyle cellStyle, TypeConverter valueTypeConverter, TypeConverter formattedValueTypeConverter, DataGridViewDataErrorContexts context)
 {
     if (value is Enum)
         return Culture.Get(value.ToString());
     else if (value != null)
         return value.ToString();
     else
         return "";
 }

        protected override object GetFormattedValue(object value, int rowIndex, ref DataGridViewCellStyle cellStyle,
            TypeConverter valueTypeConverter, TypeConverter formattedValueTypeConverter,
            DataGridViewDataErrorContexts context)
        {
            if (value is Enum)
                return GetDescription((Enum)value);

            return base.GetFormattedValue(value, rowIndex, ref cellStyle, valueTypeConverter, formattedValueTypeConverter, context);
        }

 /// <include file='doc\DataGridViewDataErrorEventArgs.uex' path='docs/doc[@for="DataGridViewDataErrorEventArgs.DataGridViewDataErrorEventArgs"]/*' />
 public DataGridViewDataErrorEventArgs(Exception exception,
     int columnIndex,
     int rowIndex,
     DataGridViewDataErrorContexts context) : base(columnIndex, rowIndex)
 {
     Debug.Assert(rowIndex > -1);
     this.exception = exception;
     this.context = context;
 }

 protected override object GetFormattedValue(object value, int rowIndex, ref DataGridViewCellStyle cellStyle, System.ComponentModel.TypeConverter valueTypeConverter, System.ComponentModel.TypeConverter formattedValueTypeConverter, DataGridViewDataErrorContexts context)
 {
     if (value == null)
     {
         value = string.Empty;
         return base.GetFormattedValue(value, rowIndex, ref cellStyle, valueTypeConverter, formattedValueTypeConverter, context);
     }
     string format = ((DataGridViewTimeColumn)OwningColumn).Format;
     value = ((DateTime)value).ToString(format);
     return base.GetFormattedValue(value, rowIndex, ref cellStyle, valueTypeConverter, formattedValueTypeConverter, context);
 }

        ///// <summary>
        ///// マスクに一致しているか？していないか？
        ///// をチェックする際に利用するMaskedTextBox
        ///// </summary>
        //private static MaskedTextBox _mtb = new MaskedTextBox();

        /// <summary>編集コントロールで変更されたセルの値</summary>
        public object GetEditingControlFormattedValue(
            DataGridViewDataErrorContexts context)
        {
            //return this.Text;// 編集処理がある場合工夫が必要
            //System.Diagnostics.Debug.WriteLine("GetEditingControlFormattedValue");
            //System.Diagnostics.Debug.WriteLine("・DataGridViewDataErrorContexts：" + context.ToString());
            //System.Diagnostics.Debug.WriteLine("・this.Text：" + this.Text);
            
            if (context ==
                (DataGridViewDataErrorContexts.Formatting
                | DataGridViewDataErrorContexts.Display))
            {
                // 編集モードに入るとき
            }
            else if (context ==
                (DataGridViewDataErrorContexts.Parsing
                | DataGridViewDataErrorContexts.Commit))
            {
                // マウスで抜けた場合

                // 例外あり。
                if (this.Edited)
                {
                    // 下端でEnterで抜けた場合
                    this.PreValidate();
                    this.ReEdit();
                }
            }
            else if (context ==
                (DataGridViewDataErrorContexts.Parsing
                | DataGridViewDataErrorContexts.Commit
                | DataGridViewDataErrorContexts.CurrentCellChange))
            {
                // Tab、Enterで抜けた場合
                this.PreValidate(); 
                this.ReEdit();
            }
            else if (context ==
                (DataGridViewDataErrorContexts.Parsing
                | DataGridViewDataErrorContexts.Commit
                | DataGridViewDataErrorContexts.LeaveControl))
            {
                // 上端でShift + Tabで抜けた場合
                this.PreValidate();
                this.ReEdit();
            }
            else
            {
                // 不明
            }

            return this.Text;
        }

        protected override object GetFormattedValue(object value, int rowIndex, ref DataGridViewCellStyle cellStyle, TypeConverter valueTypeConverter, TypeConverter formattedValueTypeConverter, DataGridViewDataErrorContexts context)
        {
            int width = this.OwningColumn.Width - 4;
            int height = this.OwningRow.Height - 4;

            if (value == null || !(value is double))
            {
                if (_EmptyImage == null || width != _EmptyImage.Width || height != _EmptyImage.Height)
                {
                    _EmptyImage = new Bitmap(width, height, PixelFormat.Format32bppPArgb);
                }
                return _EmptyImage;
            }

            RectangleF rect = new RectangleF(0, 0, width, height);
            if (_ContentImage == null || _ContentImage.Width != width || _ContentImage.Height != height)
            {
                _ContentImage = new Bitmap(width, height, PixelFormat.Format32bppPArgb);
            }
            using (Graphics g = Graphics.FromImage(_ContentImage))
            {
                //g.Clear(Color.Transparent);
                double num = (double)value;
                if (num < 0)
                {
                    num = 0;
                }
                if (num > 1)
                {
                    num = 1;
                }

                if (VisualStyleInformation.IsEnabledByUser & VisualStyleInformation.IsSupportedByOS)
                {
                    ProgressBarRenderer.DrawHorizontalBar(g, new Rectangle(2, 2, width - 2, height - 2));
                    if (num != 0)
                    {
                        ProgressBarRenderer.DrawHorizontalChunks(g, new Rectangle(3, 3, (int)((width - 4) * num), height - 4));
                    }
                }
                else
                {
                    g.DrawRectangle(Pens.Black, 2, 2, width - 2, height - 2);
                    if (num != 0)
                    {
                        g.FillRectangle(Brushes.Blue, 3, 3, (int)((width - 4) * num), height - 4);
                    }
                }

                g.DrawString(num.ToString("p1"), base.DataGridView.Font, _ForeColor, rect, _StringFormat);
                return _ContentImage;
            }
        }

      protected override object GetFormattedValue(object value, int rowIndex, ref DataGridViewCellStyle cellStyle, TypeConverter valueTypeConverter, TypeConverter formattedValueTypeConverter, DataGridViewDataErrorContexts context)
      {
        var col = ((DataGridViewListColumn)this.OwningColumn);
        var idx = FindIndexByProp(col.ValueMember, value as string);
        if (idx >= 0)
        {
          var bs = (BindingSource)col.DataSource;
          return bs.GetItemProperties(null)[col.DisplayMember].GetValue(bs[idx]);
        }

        return base.GetFormattedValue(value, rowIndex, ref cellStyle, valueTypeConverter, formattedValueTypeConverter, context);
      }

 protected override object GetFormattedValue(object value,
    int rowIndex, ref DataGridViewCellStyle cellStyle,
    TypeConverter valueTypeConverter,
    TypeConverter formattedValueTypeConverter,
    DataGridViewDataErrorContexts context)
 {
     if ((value != null) && (value != DBNull.Value))
     {
         if ((MessageDirection)value == MessageDirection.ClientToServer) return "SEND";
         else return "RECV";
     }
     else return String.Empty;
 }

 protected override object GetFormattedValue(object value, int rowIndex, ref DataGridViewCellStyle cellStyle, TypeConverter valueTypeConverter, TypeConverter formattedValueTypeConverter, DataGridViewDataErrorContexts context)
 {
     if (value != null)
     {
         if (value.ToString().Trim() != string.Empty)
         {
             if (Items.IndexOf(value) == -1)
             {
                 Items.Add(value);
                 DataGridViewComboBoxColumn col = (DataGridViewComboBoxColumn)OwningColumn;
                 col.Items.Add(value);
             }
         }
     }
     return base.GetFormattedValue(value, rowIndex, ref cellStyle, valueTypeConverter, formattedValueTypeConverter, context);
 }