/// <summary>
/// Calculate the Sums of the summary columns
/// </summary>
private void calcSummaries()
{
foreach (ReadOnlyTextBox roTextBox in sumBoxHash.Values)
{
if (roTextBox.IsSummary)
{
roTextBox.Tag = 0;
roTextBox.Text = "0";
roTextBox.Invalidate();
}
}
if (dgv.SummaryColumns != null && dgv.SummaryColumns.Length > 0 && sumBoxHash.Count > 0)
{
foreach (DataGridViewRow dgvRow in dgv.Rows)
{
foreach (DataGridViewCell dgvCell in dgvRow.Cells)
{
foreach (DataGridViewColumn dgvColumn in sumBoxHash.Keys)
{
if (dgvCell.OwningColumn.Equals(dgvColumn))
{
ReadOnlyTextBox sumBox = (ReadOnlyTextBox)sumBoxHash[dgvColumn];
if (sumBox != null && sumBox.IsSummary)
{
if (dgvCell.Value != null && !(dgvCell.Value is DBNull))
{
int i = 0;
if (IsInteger(dgvCell.Value))
{
sumBox.Tag = Convert.ToInt64(sumBox.Tag) + Convert.ToInt64(dgvCell.Value);
}
else if (IsDecimal(dgvCell.Value))
{
sumBox.Tag = Convert.ToDecimal(sumBox.Tag) + Convert.ToDecimal(dgvCell.Value);
}
else
{
//sumBox.Tag = "总" + dgv.Rows.Count + "条记录";
sumBox.Tag = dgv.Rows.Count;
}
sumBox.Text = string.Format("{0}", sumBox.Tag);
sumBox.Invalidate();
}
}
}
}
}
}
}
}
private void dgv_CellValueChanged(object sender, DataGridViewCellEventArgs e)
{
//ReadOnlyTextBox roTextBox = (ReadOnlyTextBox)sumBoxHash[dgv.Columns[e.ColumnIndex]];
//if (roTextBox != null)
//{
// if (roTextBox.IsSummary)
// calcSummaries();
//}
//加入判断是否为数据区，如果不是的话（说明是列头或者行头），则不执行以下操作
if (e.ColumnIndex > 0)
{
ReadOnlyTextBox roTextBox = (ReadOnlyTextBox)sumBoxHash[dgv.Columns[e.ColumnIndex]];
if (roTextBox != null)
{
if (roTextBox.IsSummary)
{
calcSummaries();
}
}
}
}
/// <summary>
/// Resize the summary Boxes depending on the
/// width of the Columns of the DataGridView
/// </summary>
private void resizeSumBoxes()
{
this.SuspendLayout();
if (sumBoxHash.Count > 0)
{
try
{
int rowHeaderWidth = dgv.RowHeadersVisible ? dgv.RowHeadersWidth - 1 : 0;
int sumLabelWidth = dgv.RowHeadersVisible ? dgv.RowHeadersWidth - 1 : 0;
int curPos = rowHeaderWidth;
if (dgv.DisplaySumRowHeader && sumLabelWidth > 0)
{
if (dgv.RightToLeft == RightToLeft.Yes)
{
if (sumRowHeaderLabel.Dock != DockStyle.Right)
{
sumRowHeaderLabel.Dock = DockStyle.Right;
}
}
else
{
if (sumRowHeaderLabel.Dock != DockStyle.Left)
{
sumRowHeaderLabel.Dock = DockStyle.Left;
}
}
}
else
{
if (sumRowHeaderLabel.Visible)
{
sumRowHeaderLabel.Visible = false;
}
}
int iCnt = 0;
Rectangle oldBounds;
foreach (DataGridViewColumn dgvColumn in SortedColumns) //dgv.Columns)
{
ReadOnlyTextBox sumBox = (ReadOnlyTextBox)sumBoxHash[dgvColumn];
if (sumBox != null)
{
oldBounds = sumBox.Bounds;
if (!dgvColumn.Visible)
{
sumBox.Visible = false;
continue;
}
int from = curPos - dgv.HorizontalScrollingOffset;
int width = dgvColumn.Width + (iCnt == 0 ? 0 : 0);
if (from < rowHeaderWidth)
{
width -= rowHeaderWidth - from;
from = rowHeaderWidth;
}
if (from + width > this.Width)
{
width = this.Width - from;
}
if (width < 4)
{
if (sumBox.Visible)
{
sumBox.Visible = false;
}
}
else
{
if (this.RightToLeft == RightToLeft.Yes)
{
from = this.Width - from - width;
}
if (sumBox.Left != from || sumBox.Width != width)
{
sumBox.SetBounds(from, 0, width, 0, BoundsSpecified.X | BoundsSpecified.Width);
}
if (!sumBox.Visible)
{
sumBox.Visible = true;
}
}
curPos += dgvColumn.Width + (iCnt == 0 ? 0 : 0);
if (oldBounds != sumBox.Bounds)
{
sumBox.Invalidate();
}
}
iCnt++;
}
}
finally
{
this.ResumeLayout();
}
}
}
/// <summary>
/// Create summary boxes for each Column of the DataGridView
/// </summary>
private void reCreateSumBoxes()
{
ReadOnlyTextBox sumBox;
foreach (Control control in sumBoxHash.Values)
{
this.Controls.Remove(control);
}
sumBoxHash.Clear();
int iCnt = 0;
List <DataGridViewColumn> sortedColumns = SortedColumns;
foreach (DataGridViewColumn dgvColumn in sortedColumns)
{
sumBox = new ReadOnlyTextBox();
sumBoxHash.Add(dgvColumn, sumBox);
sumBox.Top = 0;
sumBox.Height = dgv.RowTemplate.Height;
sumBox.BorderColor = dgv.GridColor;
if (summaryRowBackColor == null)
{
sumBox.BackColor = dgv.DefaultCellStyle.BackColor;
}
else
{
sumBox.BackColor = summaryRowBackColor;
}
sumBox.BringToFront();
if (dgv.ColumnCount - iCnt == 1)
{
sumBox.IsLastColumn = true;
}
if (dgv.SummaryColumns != null && dgv.SummaryColumns.Length > 0)
{
for (int iCntX = 0; iCntX < dgv.SummaryColumns.Length; iCntX++)
{
if (dgv.SummaryColumns[iCntX] == dgvColumn.DataPropertyName ||
dgv.SummaryColumns[iCntX] == dgvColumn.Name)
{
dgvColumn.DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleRight;
dgvColumn.CellTemplate.Style.Format = dgv.FormatString;
sumBox.TextAlign = TextHelper.TranslateGridColumnAligment(dgvColumn.DefaultCellStyle.Alignment);
sumBox.IsSummary = true;
sumBox.FormatString = dgvColumn.CellTemplate.Style.Format;
if (dgvColumn.ValueType == typeof(System.Int32) || dgvColumn.ValueType == typeof(System.Int16) ||
dgvColumn.ValueType == typeof(System.Int64) || dgvColumn.ValueType == typeof(System.Single) ||
dgvColumn.ValueType == typeof(System.Double) || dgvColumn.ValueType == typeof(System.Single) ||
dgvColumn.ValueType == typeof(System.Decimal))
{
sumBox.Tag = System.Activator.CreateInstance(dgvColumn.ValueType);
}
}
}
}
sumBox.BringToFront();
this.Controls.Add(sumBox);
iCnt++;
}
if (dgv.DisplaySumRowHeader)
{
sumRowHeaderLabel.Font = new Font(dgv.DefaultCellStyle.Font, dgv.SumRowHeaderTextBold ? FontStyle.Bold : FontStyle.Regular);
sumRowHeaderLabel.Anchor = AnchorStyles.Left;
sumRowHeaderLabel.TextAlign = ContentAlignment.MiddleLeft;
sumRowHeaderLabel.Height = sumRowHeaderLabel.Font.Height;
sumRowHeaderLabel.Top = Convert.ToInt32(Math.Floor(Math.Abs(Convert.ToDecimal(this.InitialHeight - sumRowHeaderLabel.Height) / 2)));
sumRowHeaderLabel.Text = dgv.SumRowHeaderText;
//sumRowHeaderLabel.ForeColor = dgv.DefaultCellStyle.ForeColor;
sumRowHeaderLabel.ForeColor = Color.Red;
sumRowHeaderLabel.Margin = new Padding(0);
sumRowHeaderLabel.Padding = new Padding(0);
this.Controls.Add(sumRowHeaderLabel);
}
calcSummaries();
resizeSumBoxes();
}
