C# Winfrom Datagridview 下方添加统计行
2014-08-08 22:29
316 查看
最近在项目时客户要求datagridview下方有一个统计行,在网上找了好久,都没有找到合适的解决方案,最终自己改写了一个,总算把问题给解决了。废话不多了,现在把源码分享出来。
先看一下效果图。
调用方法
参数说明:new string[] { "T_Number", "T_Weight", "T_SalePrice" } 为要统计的字段,ShowSummary()方法的使用可以参考下面的介绍
核心代码
SummaryDataGridView类
先看一下效果图。
调用方法
SummaryDataGGrid_InventoryridView.ShowSummary(Grid_Inventory, true, "合计", true, new string[] { "T_Number", "T_Weight", "T_SalePrice" });
参数说明:new string[] { "T_Number", "T_Weight", "T_SalePrice" } 为要统计的字段,ShowSummary()方法的使用可以参考下面的介绍
核心代码
SummaryDataGridView类
<strong>public static class SummaryDataGridView { #region 显示统计列 /// <summary> /// 显示DataGridView的统计信息 /// </summary> /// <param name="dgv"></param> /// <param name="SummaryColumns">要统计的列名称或数据源绑定列名称</param> public static void ShowSummary(this DataGridView dgv, string[] SummaryColumns) { SummaryControlContainer summaryControl = new SummaryControlContainer(dgv, SummaryColumns); dgv.Controls.Add(summaryControl); //dgv.Tag = summaryControl; summaryControl.BringToFront(); summaryControl.Show(); } /// <summary> /// 显示DataGridView的统计信息 /// </summary> /// <param name="dgv"></param> /// <param name="DisplaySumRowHeader">是否显示合计行标题</param> /// <param name="SumRowHeaderText">合计列标题</param> /// <param name="SumRowHeaderTextBold">合计列标题用粗体显示</param> /// <param name="SummaryColumns">要统计的列名称或数据源绑定列名称</param> public static void ShowSummary( this DataGridView dgv, bool DisplaySumRowHeader, string SumRowHeaderText, bool SumRowHeaderTextBold, string[] SummaryColumns) { SummaryControlContainer summaryControl = new SummaryControlContainer(dgv, DisplaySumRowHeader, SumRowHeaderText, SumRowHeaderTextBold, SummaryColumns); dgv.Controls.Add(summaryControl); //dgv.Tag = summaryControl; summaryControl.BringToFront(); summaryControl.Show(); } #endregion }</strong>在添加一个组件 ReadOnlyTextBox.cs
public partial class ReadOnlyTextBox : Control { StringFormat format; public ReadOnlyTextBox() { InitializeComponent(); format = new StringFormat(StringFormatFlags.NoWrap | StringFormatFlags.FitBlackBox | StringFormatFlags.MeasureTrailingSpaces); format.LineAlignment = StringAlignment.Center; this.Height = 10; this.Width = 10; this.Padding = new Padding(2); } public ReadOnlyTextBox(IContainer container) { container.Add(this); InitializeComponent(); this.TextChanged += new EventHandler(ReadOnlyTextBox_TextChanged); } private void ReadOnlyTextBox_TextChanged(object sender, EventArgs e) { if (!string.IsNullOrEmpty(formatString) && !string.IsNullOrEmpty(Text)) { Text = string.Format(formatString, Text); } } private Color borderColor = Color.Black; private bool isSummary; public bool IsSummary { get { return isSummary; } set { isSummary = value; } } private bool isLastColumn; public bool IsLastColumn { get { return isLastColumn; } set { isLastColumn = value; } } private string formatString; public string FormatString { get { return formatString; } set { formatString = value; } } private HorizontalAlignment textAlign = HorizontalAlignment.Left; [DefaultValue(HorizontalAlignment.Left)] public HorizontalAlignment TextAlign { get { return textAlign; } set { textAlign = value; setFormatFlags(); } } private StringTrimming trimming = StringTrimming.None; [DefaultValue(StringTrimming.None)] public StringTrimming Trimming { get { return trimming; } set { trimming = value; setFormatFlags(); } } private void setFormatFlags() { format.Alignment = TextHelper.TranslateAligment(TextAlign); format.Trimming = trimming; } public Color BorderColor { get { return borderColor; } set { borderColor = value; } } protected override void OnPaint(PaintEventArgs e) { int subWidth = 0; Rectangle textBounds; if (!string.IsNullOrEmpty(formatString) && !string.IsNullOrEmpty(Text)) { Text = String.Format("{0:" + formatString + "}", Convert.ToDecimal(Text)); } textBounds = new Rectangle(this.ClientRectangle.X + 2, this.ClientRectangle.Y + 2, this.ClientRectangle.Width - 2, this.ClientRectangle.Height - 2); using (Pen pen = new Pen(borderColor)) { if (isLastColumn) subWidth = 1; e.Graphics.FillRectangle(new SolidBrush(this.BackColor), this.ClientRectangle); e.Graphics.DrawRectangle(pen, this.ClientRectangle.X, this.ClientRectangle.Y, this.ClientRectangle.Width - subWidth, this.ClientRectangle.Height - 1); e.Graphics.DrawString(Text, Font, Brushes.Black, textBounds, format); } } }TextHelper.cs 类:
public static class TextHelper { public static StringAlignment TranslateAligment(HorizontalAlignment aligment) { if (aligment == HorizontalAlignment.Left) return StringAlignment.Near; else if (aligment == HorizontalAlignment.Right) return StringAlignment.Far; else return StringAlignment.Center; } public static HorizontalAlignment TranslateGridColumnAligment(DataGridViewContentAlignment aligment) { if (aligment == DataGridViewContentAlignment.BottomLeft || aligment == DataGridViewContentAlignment.MiddleLeft || aligment == DataGridViewContentAlignment.TopLeft) return HorizontalAlignment.Left; else if (aligment == DataGridViewContentAlignment.BottomRight || aligment == DataGridViewContentAlignment.MiddleRight || aligment == DataGridViewContentAlignment.TopRight) return HorizontalAlignment.Right; else return HorizontalAlignment.Center; } public static TextFormatFlags TranslateAligmentToFlag(HorizontalAlignment aligment) { if (aligment == HorizontalAlignment.Left) return TextFormatFlags.Left; else if (aligment == HorizontalAlignment.Right) return TextFormatFlags.Right; else return TextFormatFlags.HorizontalCenter; } public static TextFormatFlags TranslateTrimmingToFlag(StringTrimming trimming) { if (trimming == StringTrimming.EllipsisCharacter) return TextFormatFlags.EndEllipsis; else if (trimming == StringTrimming.EllipsisPath) return TextFormatFlags.PathEllipsis; if (trimming == StringTrimming.EllipsisWord) return TextFormatFlags.WordEllipsis; if (trimming == StringTrimming.Word) return TextFormatFlags.WordBreak; else return TextFormatFlags.Default; } }最后在添加一个用户控件命名成:SummaryControlContainer.cs 代码如下:
public partial class SummaryControlContainer : UserControl { #region 公有属性 private bool _DisplaySumRowHeader; /// <summary> /// 是否显示合计行标题 /// </summary> public bool DisplaySumRowHeader { f186 get { return _DisplaySumRowHeader; } set { _DisplaySumRowHeader = value; } } private string _SumRowHeaderText = "合计"; /// <summary> /// 合计列标题 /// </summary> public string SumRowHeaderText { get { if (_DisplaySumRowHeader) { return _SumRowHeaderText; } else { return string.Empty; } } set { if (string.IsNullOrEmpty(value)) { _SumRowHeaderText = "合计"; } else { _SumRowHeaderText = value; } } } private bool _SumRowHeaderTextBold; /// <summary> /// 合计列标题用粗体显示 /// </summary> public bool SumRowHeaderTextBold { get { return _SumRowHeaderTextBold; } set { _SumRowHeaderTextBold = value; } } private string[] _SummaryColumns; /// <summary> /// 要统计的列名称或数据源绑定列名称 /// </summary> public string[] SummaryColumns { get { return _SummaryColumns; } set { _SummaryColumns = value; } } private string _FormatString = "F02"; public string FormatString { get { return _FormatString; } set { _FormatString = value; } } #endregion #region 私有变量 private Hashtable sumBoxHash; private DataGridView dgv; private Label sumRowHeaderLabel; #endregion #region 构造函数 public SummaryControlContainer(DataGridView dgv, string[] summaryColumns) : this(dgv, true, "合计", false, summaryColumns) { } public SummaryControlContainer(DataGridView dgv, bool displaySumRowHeader, string sumRowHeaderText, bool sumRowHeaderTextBold, string[] summaryColumns) { if (dgv == null) { throw new Exception("DataGridView 不能为空!"); } this.dgv = dgv; _DisplaySumRowHeader = displaySumRowHeader; _SumRowHeaderText = sumRowHeaderText; _SumRowHeaderTextBold = sumRowHeaderTextBold; _SummaryColumns = summaryColumns; this.Visible = true; this.Height = dgv.RowTemplate.Height; this.Top = dgv.Height - this.Height; this.Left = dgv.Left; this.BackColor = dgv.RowHeadersDefaultCellStyle.BackColor; sumBoxHash = new Hashtable(); sumRowHeaderLabel = new Label(); sumRowHeaderLabel.Height = this.Height; sumRowHeaderLabel.Width = dgv.RowHeadersWidth; sumRowHeaderLabel.BackColor = dgv.RowHeadersDefaultCellStyle.BackColor; this.dgv.Resize += new EventHandler(dgv_Resize); this.dgv.Scroll += new ScrollEventHandler(dgv_Scroll); this.dgv.ColumnWidthChanged += new DataGridViewColumnEventHandler(dgv_ColumnWidthChanged); this.dgv.RowHeadersWidthChanged += new EventHandler(dgv_RowHeadersWidthChanged); this.dgv.RowsAdded += new DataGridViewRowsAddedEventHandler(dgv_RowsAdded); this.dgv.RowsRemoved += new DataGridViewRowsRemovedEventHandler(dgv_RowsRemoved); this.dgv.CellValueChanged += new DataGridViewCellEventHandler(dgv_CellValueChanged); this.dgv.DataSourceChanged += new EventHandler(dgv_DataSourceChanged); this.dgv.ColumnAdded += new DataGridViewColumnEventHandler(dgv_ColumnAdded); this.dgv.ColumnRemoved += new DataGridViewColumnEventHandler(dgv_ColumnRemoved); this.dgv.ColumnStateChanged += new DataGridViewColumnStateChangedEventHandler(dgv_ColumnStateChanged); this.dgv.ColumnDisplayIndexChanged += new DataGridViewColumnEventHandler(dgv_ColumnDisplayIndexChanged); reCreateSumBoxes(); } #endregion #region 私有方法 /// <summary> /// Checks if passed object is of type of integer /// </summary> /// <param name="o">object</param> /// <returns>true/ false</returns> protected bool IsInteger(object o) { if (o is Int64) { return true; } if (o is Int32) { return true; } if (o is Int16) { return true; } return false; } /// <summary> /// Checks if passed object is of type of decimal/ double /// </summary> /// <param name="o">object</param> /// <returns>true/ false</returns> protected bool IsDecimal(object o) { if (o is Decimal) { return true; } if (o is Single) { return true; } if (o is Double) { return true; } return false; } /// <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 (SummaryColumns != null && 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> /// Create summary boxes for each Column of the DataGridView /// </summary> private void reCreateSumBoxes() { foreach (Control control in sumBoxHash.Values) { this.Controls.Remove(control); } sumBoxHash.Clear(); int iCnt = 0; ReadOnlyTextBox sumBox; 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; sumBox.BackColor = dgv.DefaultCellStyle.BackColor; sumBox.ForeColor = dgv.DefaultCellStyle.ForeColor; sumBox.BringToFront(); if (dgv.ColumnCount - iCnt == 1) { sumBox.IsLastColumn = true; } if (SummaryColumns != null && SummaryColumns.Length > 0) { for (int iCntX = 0; iCntX < SummaryColumns.Length; iCntX++) { if (SummaryColumns[iCntX] == dgvColumn.DataPropertyName || SummaryColumns[iCntX] == dgvColumn.Name) { sumBox.TextAlign = TextHelper.TranslateGridColumnAligment(dgvColumn.DefaultCellStyle.Alignment); sumBox.IsSummary = true; sumBox.FormatString = dgvColumn.DefaultCellStyle.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++; } sumRowHeaderLabel.Font = new Font(dgv.DefaultCellStyle.Font, SumRowHeaderTextBold ? FontStyle.Bold : FontStyle.Regular); sumRowHeaderLabel.Anchor = AnchorStyles.Left; sumRowHeaderLabel.TextAlign = ContentAlignment.MiddleRight; sumRowHeaderLabel.Height = this.Height; sumRowHeaderLabel.Width = dgv.RowHeadersWidth; sumRowHeaderLabel.Top = 0; sumRowHeaderLabel.Text = DisplaySumRowHeader ? SumRowHeaderText : string.Empty; sumRowHeaderLabel.ForeColor = dgv.DefaultCellStyle.ForeColor; sumRowHeaderLabel.Margin = new Padding(0); sumRowHeaderLabel.Padding = new Padding(0); this.Controls.Add(sumRowHeaderLabel); calcSummaries(); resizeSumBoxes(); } /// <summary> /// Order the columns in the way they are displayed /// </summary> private List<DataGridViewColumn> SortedColumns { get { List<DataGridViewColumn> result = new List<DataGridViewColumn>(); DataGridViewColumn column = dgv.Columns.GetFirstColumn(DataGridViewElementStates.None); if (column == null) { return result; } result.Add(column); while ((column = dgv.Columns.GetNextColumn(column, DataGridViewElementStates.None, DataGridViewElementStates.None)) != null) { result.Add(column); } return result; } } /// <summary> /// Resize the summary Boxes depending on the /// width of the Columns of the DataGridView /// </summary> private void resizeSumBoxes() { try { this.SuspendLayout(); if (sumBoxHash != null && sumBoxHash.Count > 0) try { int rowHeaderWidth = dgv.RowHeadersVisible ? dgv.RowHeadersWidth - 1 : 0; int sumLabelWidth = dgv.RowHeadersVisible ? dgv.RowHeadersWidth - 1 : 0; int curPos = rowHeaderWidth; if (DisplaySumRowHeader && sumLabelWidth > 0) { sumRowHeaderLabel.Visible = true; sumRowHeaderLabel.Width = sumLabelWidth; 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) { ReadOnlyTextBox sumBox = (ReadOnlyTextBox)sumBoxHash[dgvColumn]; if (sumBox != null) { oldBounds = sumBox.Bounds; if (!dgvColumn.Visible) { sumBox.Visible = false; continue; } int from = dgvColumn.Frozen ? curPos : 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(); } } #if (DEBUG) catch (Exception ee) { MessageBox.Show(ee.ToString()); System.Diagnostics.Debug.WriteLine(ee.ToString()); } #else catch { } #endif } #endregion #region 事件处理程序 void dgv_DataSourceChanged(object sender, EventArgs e) { calcSummaries(); } private void dgv_CellValueChanged(object sender, DataGridViewCellEventArgs e) { ReadOnlyTextBox roTextBox = (ReadOnlyTextBox)sumBoxHash[dgv.Columns[e.ColumnIndex]]; if (roTextBox != null) { if (roTextBox.IsSummary) { calcSummaries(); } } } private void dgv_RowsAdded(object sender, DataGridViewRowsAddedEventArgs e) { calcSummaries(); } private void dgv_RowsRemoved(object sender, DataGridViewRowsRemovedEventArgs e) { calcSummaries(); } private void dgv_ColumnDisplayIndexChanged(object sender, DataGridViewColumnEventArgs e) { //resizeSumBoxes(); reCreateSumBoxes(); } private void dgv_ColumnStateChanged(object sender, DataGridViewColumnStateChangedEventArgs e) { resizeSumBoxes(); } private void dgv_Scroll(object sender, ScrollEventArgs e) { resizeSumBoxes(); } private void dgv_ColumnWidthChanged(object sender, DataGridViewColumnEventArgs e) { resizeSumBoxes(); } private void dgv_RowHeadersWidthChanged(object sender, EventArgs e) { int columnsWidth = 0; for (int iCnt = 0; iCnt < dgv.Columns.Count; iCnt++) { if (dgv.Columns[iCnt].Visible) { if (dgv.Columns[iCnt].AutoSizeMode == DataGridViewAutoSizeColumnMode.Fill) { columnsWidth += dgv.Columns[iCnt].MinimumWidth; } else columnsWidth += dgv.Columns[iCnt].Width; } } this.Width = columnsWidth; resizeSumBoxes(); } protected override void OnResize(EventArgs e) { base.OnResize(e); resizeSumBoxes(); } private void dgv_Resize(object sender, EventArgs e) { adjustSumControlToGrid(); resizeSumBoxes(); } private void adjustSumControlToGrid() { ScrollBar horizontalScrollBar = (ScrollBar)typeof(DataGridView).GetProperty("HorizontalScrollBar", BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance).GetValue(dgv, null); ScrollBar verticalScrollBar = (ScrollBar)typeof(DataGridView).GetProperty("VerticalScrollBar", BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance).GetValue(dgv, null); if (horizontalScrollBar.Visible) { this.Top = dgv.Height - this.Height - horizontalScrollBar.Height; } else { this.Top = dgv.Height - this.Height; } this.Left = dgv.Left; if (verticalScrollBar.Visible) { this.Width = dgv.Width - verticalScrollBar.Width; } else { this.Width = dgv.Width; } } private void dgv_ColumnRemoved(object sender, DataGridViewColumnEventArgs e) { reCreateSumBoxes(); } private void dgv_ColumnAdded(object sender, DataGridViewColumnEventArgs e) { reCreateSumBoxes(); } #endregion }
相关文章推荐
- winfrom datagridview下方显示统计列
- C# Winfrom设置DataGridViewColumn标题对齐方式TitleAlignment
- C#Winfrom设置DataGridView单元格文本格式为钱的格式
- C#Winfrom获取指定目录下所有文件名称和文件名称相应的目录 并且添加到DataTable
- 【C#】winfromdataGridView键盘上下左右方向
- C# winfrom中 DataGridView中显示行号
- C# WinFrom 中如何将txt内容显示到dataGridView
- C# winfrom 中取datagridview中checkbox的所有选中值
- DataGridView右键选中某单元格(C# Winfrom)
- c# winfrom DataGridView使行高不可改变,使列头高度不可改变,
- C# winfrom在Panel下面动态添加空间
- 【整理】C# WinFrom 中如何txt内容与dataGridView互动
- C#WinFrom开发系列之关于动态添加生成和删除控件的相关知识
- C# WinFrom 文件绝对路径
- 对DataGridView进行添加、修改、删除数据操作----C#
- C#对DataGridView进行添加、修改、删除数据操作
- C# winfrom 中datagridview中checkbox的使用方法
- C# winform 和Webform 给DataGridView 和DataView 添加行号
- C# WinFrom SplitContainer和UserControl组成简单的类似于web系统的框架页
- c# winFrom 使窗体显示SplitContainer或Panel中