private void dgv_CellValueChanged(object sender, DataGridViewCellEventArgs e)
{
ReadOnlyTextBox roTextBox = (ReadOnlyTextBox)sumBoxHash[dgv.Columns[e.ColumnIndex]];
if (roTextBox != null)
{
if (roTextBox.IsSummary)
{
calcSummaries();
}
}
}
/// <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))
{
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);
}
sumBox.Text = string.Format("{0}", sumBox.Tag);
sumBox.Invalidate();
}
}
}
}
}
}
}
}
/// <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(Convert.ToDouble(this.InitialHeight - sumRowHeaderLabel.Height) / 2F);
sumRowHeaderLabel.Text = dgv.SumRowHeaderText;
sumRowHeaderLabel.ForeColor = dgv.DefaultCellStyle.ForeColor;
sumRowHeaderLabel.Margin = new Padding(0);
sumRowHeaderLabel.Padding = new Padding(0);
this.Controls.Add(sumRowHeaderLabel);
}
calcSummaries();
resizeSumBoxes();
}
private void DataGridViewSummary_DataSourceChanged(object sender, EventArgs e)
{
SuspendLayout();
if (firstBind)
{
firstBind = false;
// AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.AllCells;//自动调整单元格大小适应内容
SelectionMode = DataGridViewSelectionMode.FullRowSelect; //单击选择整行
MultiSelect = false; //不允许多选单元格
// ColumnHeadersHeight = cellFontSize+15;
ColumnHeadersDefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;//列标题居中显示
ColumnHeadersDefaultCellStyle.BackColor = Color.Silver;
RowsDefaultCellStyle.BackColor = Color.White;
AlternatingRowsDefaultCellStyle.BackColor = Color.LightBlue;
ColumnHeadersDefaultCellStyle.Font = new System.Drawing.Font("宋体", headerFontSize, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
RowsDefaultCellStyle.Font = new Font("宋体", cellFontSize);
AllowUserToResizeRows = false;
if (hasCheckBoxColumn)
{
Columns[0].MinimumWidth = 50;
Columns[0].HeaderText = "";
Columns[0].SortMode = DataGridViewColumnSortMode.NotSortable;
int rowHeaderWidth = RowHeadersVisible ? RowHeadersWidth - 1 : 0;
int x = Columns[0].Width / 2 - headerCheckBox.Width / 2 + rowHeaderWidth;
int y = ColumnHeadersHeight / 2 - headerCheckBox.Height / 2;
headerCheckBox.Location = new Point(x, y);
headerVisibleX = Columns[0].Width / 2;
headerCheckBox.Visible = true;
}
}
Graphics gh = this.CreateGraphics();
SizeF sf = gh.MeasureString(RowCount.ToString(), RowsDefaultCellStyle.Font);
RowHeadersWidth = (int)sf.Width + 20;
if (summaryRowVisible && summaryColumns != null)
{
foreach (DataGridViewColumn dgvColumn in Columns)
{
if (summaryColumns.Contains(dgvColumn.Name))
{
ReadOnlyTextBox sumBox = (ReadOnlyTextBox)summaryControl.sumBoxHash[dgvColumn];
sf = gh.MeasureString(sumBox.Text, RowsDefaultCellStyle.Font);
dgvColumn.MinimumWidth = (int)sf.Width + 10;
}
}
}
AutoResizeColumns();
calculateColumnsWidth();
ResumeLayout(false);
}