+ UIDataGridViewFooter：增加DataGridView页脚，可做统计显示

SunnyUI.Demo/Controls/FDataGridView.Designer.cs

@@ -32,8 +32,10 @@
             System.Windows.Forms.DataGridViewCellStyle dataGridViewCellStyle2 = new System.Windows.Forms.DataGridViewCellStyle();
             System.Windows.Forms.DataGridViewCellStyle dataGridViewCellStyle3 = new System.Windows.Forms.DataGridViewCellStyle();
             System.Windows.Forms.DataGridViewCellStyle dataGridViewCellStyle4 = new System.Windows.Forms.DataGridViewCellStyle();
+            System.Windows.Forms.DataGridViewCellStyle dataGridViewCellStyle5 = new System.Windows.Forms.DataGridViewCellStyle();
             this.uiDataGridView1 = new Sunny.UI.UIDataGridView();
             this.uiPagination1 = new Sunny.UI.UIPagination();
+            this.uiDataGridViewFooter1 = new Sunny.UI.UIDataGridViewFooter();
             this.PagePanel.SuspendLayout();
             ((System.ComponentModel.ISupportInitialize)(this.uiDataGridView1)).BeginInit();
             this.SuspendLayout();
@@ -41,6 +43,7 @@
             // PagePanel
             // 
             this.PagePanel.Controls.Add(this.uiDataGridView1);
+            this.PagePanel.Controls.Add(this.uiDataGridViewFooter1);
             this.PagePanel.Controls.Add(this.uiPagination1);
             this.PagePanel.Size = new System.Drawing.Size(861, 415);
             // 
@@ -59,7 +62,7 @@
             dataGridViewCellStyle2.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(80)))), ((int)(((byte)(160)))), ((int)(((byte)(255)))));
             dataGridViewCellStyle2.Font = new System.Drawing.Font("微软雅黑", 12F);
             dataGridViewCellStyle2.ForeColor = System.Drawing.Color.White;
-            dataGridViewCellStyle2.SelectionBackColor = System.Drawing.SystemColors.Highlight;
+            dataGridViewCellStyle2.SelectionBackColor = System.Drawing.Color.FromArgb(((int)(((byte)(80)))), ((int)(((byte)(160)))), ((int)(((byte)(255)))));
             dataGridViewCellStyle2.SelectionForeColor = System.Drawing.SystemColors.HighlightText;
             dataGridViewCellStyle2.WrapMode = System.Windows.Forms.DataGridViewTriState.True;
             this.uiDataGridView1.ColumnHeadersDefaultCellStyle = dataGridViewCellStyle2;
@@ -80,37 +83,62 @@
             this.uiDataGridView1.Location = new System.Drawing.Point(0, 0);
             this.uiDataGridView1.MultiSelect = false;
             this.uiDataGridView1.Name = "uiDataGridView1";
+            dataGridViewCellStyle4.Alignment = System.Windows.Forms.DataGridViewContentAlignment.MiddleLeft;
+            dataGridViewCellStyle4.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(235)))), ((int)(((byte)(243)))), ((int)(((byte)(255)))));
+            dataGridViewCellStyle4.Font = new System.Drawing.Font("微软雅黑", 12F);
+            dataGridViewCellStyle4.ForeColor = System.Drawing.Color.White;
+            dataGridViewCellStyle4.SelectionBackColor = System.Drawing.Color.FromArgb(((int)(((byte)(80)))), ((int)(((byte)(160)))), ((int)(((byte)(255)))));
+            dataGridViewCellStyle4.SelectionForeColor = System.Drawing.SystemColors.HighlightText;
+            dataGridViewCellStyle4.WrapMode = System.Windows.Forms.DataGridViewTriState.True;
+            this.uiDataGridView1.RowHeadersDefaultCellStyle = dataGridViewCellStyle4;
             this.uiDataGridView1.RowHeadersVisible = false;
-            dataGridViewCellStyle4.BackColor = System.Drawing.Color.White;
+            dataGridViewCellStyle5.BackColor = System.Drawing.Color.White;
-            this.uiDataGridView1.RowsDefaultCellStyle = dataGridViewCellStyle4;
+            this.uiDataGridView1.RowsDefaultCellStyle = dataGridViewCellStyle5;
             this.uiDataGridView1.RowTemplate.Height = 29;
             this.uiDataGridView1.SelectedIndex = -1;
             this.uiDataGridView1.SelectionMode = System.Windows.Forms.DataGridViewSelectionMode.FullRowSelect;
             this.uiDataGridView1.ShowRect = false;
-            this.uiDataGridView1.Size = new System.Drawing.Size(861, 380);
+            this.uiDataGridView1.Size = new System.Drawing.Size(861, 345);
             this.uiDataGridView1.TabIndex = 0;
             // 
             // uiPagination1
             // 
-            this.uiPagination1.ActivePage = 50;
+            this.uiPagination1.ActivePage = 20;
             this.uiPagination1.CausesValidation = false;
             this.uiPagination1.Dock = System.Windows.Forms.DockStyle.Bottom;
             this.uiPagination1.Font = new System.Drawing.Font("微软雅黑", 12F);
             this.uiPagination1.Location = new System.Drawing.Point(0, 380);
             this.uiPagination1.Margin = new System.Windows.Forms.Padding(4, 5, 4, 5);
+            this.uiPagination1.MinimumSize = new System.Drawing.Size(1, 1);
             this.uiPagination1.Name = "uiPagination1";
             this.uiPagination1.PagerCount = 11;
             this.uiPagination1.PageSize = 50;
-            this.uiPagination1.RectSides = System.Windows.Forms.ToolStripStatusLabelBorderSides.None;
+            this.uiPagination1.RadiusSides = Sunny.UI.UICornerRadiusSides.None;
+            this.uiPagination1.RectSides = System.Windows.Forms.ToolStripStatusLabelBorderSides.Top;
             this.uiPagination1.Size = new System.Drawing.Size(861, 35);
             this.uiPagination1.TabIndex = 1;
             this.uiPagination1.Text = "uiDataGridPage1";
+            this.uiPagination1.TextAlignment = System.Drawing.ContentAlignment.MiddleCenter;
             this.uiPagination1.TotalCount = 40000;
             this.uiPagination1.PageChanged += new Sunny.UI.UIPagination.OnPageChangeEventHandler(this.uiPagination1_PageChanged);
             // 
+            // uiDataGridViewFooter1
+            // 
+            this.uiDataGridViewFooter1.DataGridView = this.uiDataGridView1;
+            this.uiDataGridViewFooter1.Dock = System.Windows.Forms.DockStyle.Bottom;
+            this.uiDataGridViewFooter1.FillColor = System.Drawing.Color.FromArgb(((int)(((byte)(235)))), ((int)(((byte)(243)))), ((int)(((byte)(255)))));
+            this.uiDataGridViewFooter1.Font = new System.Drawing.Font("微软雅黑", 12F);
+            this.uiDataGridViewFooter1.Location = new System.Drawing.Point(0, 345);
+            this.uiDataGridViewFooter1.MinimumSize = new System.Drawing.Size(1, 1);
+            this.uiDataGridViewFooter1.Name = "uiDataGridViewFooter1";
+            this.uiDataGridViewFooter1.RadiusSides = Sunny.UI.UICornerRadiusSides.None;
+            this.uiDataGridViewFooter1.RectSides = System.Windows.Forms.ToolStripStatusLabelBorderSides.None;
+            this.uiDataGridViewFooter1.Size = new System.Drawing.Size(861, 35);
+            this.uiDataGridViewFooter1.TabIndex = 2;
+            this.uiDataGridViewFooter1.Text = "uiDataGridViewFooter1";
+            // 
             // FDataGridView
             // 
-            this.AutoScaleDimensions = new System.Drawing.SizeF(10F, 21F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
             this.ClientSize = new System.Drawing.Size(861, 450);
             this.Name = "FDataGridView";
@@ -127,5 +155,6 @@
 
         private UIDataGridView uiDataGridView1;
         private UIPagination uiPagination1;
+        private UIDataGridViewFooter uiDataGridViewFooter1;
     }
 }

SunnyUI/Controls/UIDataGridView.cs

@@ -135,6 +135,7 @@ namespace Sunny.UI
         private void VerticalScrollBar_ValueChanged(object sender, EventArgs e)
         {
             VBar.Value = FirstDisplayedScrollingRowIndex;
+            VerticalScrollBarChanged?.Invoke(this, e);
         }
 
         private void VBarValueChanged(object sender, EventArgs e)
@@ -151,8 +152,13 @@ namespace Sunny.UI
         {
             HorizontalScrollBar.Value = HBar.Value;
             HorizontalScrollingOffset = HBar.Value;
+            HorizontalScrollBarChanged?.Invoke(this, e);
         }
 
+        public event EventHandler HorizontalScrollBarChanged;
+
+        public event EventHandler VerticalScrollBarChanged;
+
         public void SetScrollInfo()
         {
             if (VBar == null || HBar == null)

SunnyUI/Controls/UIDataGridViewFooter.cs

@@ -0,0 +1,157 @@
+/******************************************************************************
+ * SunnyUI 开源控件库、工具类库、扩展类库、多页面开发框架。
+ * CopyRight (C) 2012-2021 ShenYongHua(沈永华).
+ * QQ群：56829229 QQ：17612584 EMail：SunnyUI@QQ.Com
+ *
+ * Blog:   https://www.cnblogs.com/yhuse
+ * Gitee:  https://gitee.com/yhuse/SunnyUI
+ * GitHub: https://github.com/yhuse/SunnyUI
+ *
+ * SunnyUI.dll can be used for free under the GPL-3.0 license.
+ * If you use this code, please keep this note.
+ * 如果您使用此代码，请保留此说明。
+ ******************************************************************************
+ * 文件名称: UIDataGridViewFooter
+ * 文件说明: DataGridView页脚，可做统计显示
+ * 当前版本: V3.0
+ * 创建日期: 2021-04-20
+ *
+ * 2021-04-20: V3.0.3 增加文件说明
+******************************************************************************/
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Drawing;
+using System.Drawing.Drawing2D;
+using System.Windows.Forms;
+
+namespace Sunny.UI
+{
+    [ToolboxItem(true)]
+    public class UIDataGridViewFooter : UIControl
+    {
+        public UIDataGridViewFooter()
+        {
+            SetStyleFlags(true, false, true);
+            Height = 35;
+            RadiusSides = UICornerRadiusSides.None;
+            RectSides = ToolStripStatusLabelBorderSides.None;
+        }
+
+        private UIDataGridView dgv;
+        public UIDataGridView DataGridView
+        {
+            get => dgv;
+            set
+            {
+                dgv = value;
+                if (dgv != null)
+                {
+                    dgv.ColumnWidthChanged += Dgv_ColumnWidthChanged;
+                    dgv.HorizontalScrollBarChanged += Dgv_HorizontalScrollBarChanged;
+                }
+            }
+        }
+
+        public void Clear()
+        {
+            dictionary.Clear();
+            Invalidate();
+        }
+
+        private readonly Dictionary<string, string> dictionary = new Dictionary<string, string>();
+
+        public string this[string name]
+        {
+            get => dictionary.ContainsKey(name) ? dictionary[name] : "";
+            set
+            {
+                if (dictionary.NotContainsKey(name))
+                    dictionary.Add(name, value);
+                else
+                    dictionary[name] = value;
+
+                Invalidate();
+            }
+        }
+
+        private void Dgv_HorizontalScrollBarChanged(object sender, EventArgs e)
+        {
+            Invalidate();
+        }
+
+        private void Dgv_ColumnWidthChanged(object sender, DataGridViewColumnEventArgs e)
+        {
+            Invalidate();
+        }
+
+        protected override void OnPaintFore(Graphics g, GraphicsPath path)
+        {
+            if (dgv.ColumnCount > 0 && dgv.RowCount > 0)
+            {
+                foreach (DataGridViewColumn column in dgv.Columns)
+                {
+                    Rectangle rect = dgv.GetCellDisplayRectangle(column.Index, 0, false);
+                    if (rect.Left == 0 && rect.Width == 0) continue;
+
+                    string str = this[column.Name];
+                    if (str.IsNullOrEmpty()) continue;
+
+                    SizeF sf = g.MeasureString(str, Font);
+                    if (rect.Left == 0 && rect.Width < column.Width)
+                    {
+                        g.DrawString(str, Font, Color.White, rect.Width - column.Width + (column.Width - sf.Width) / 2.0f, (Height - sf.Height) / 2.0f);
+                    }
+                    else
+                    {
+                        g.DrawString(str, Font, Color.White, rect.Left + (column.Width - sf.Width) / 2.0f, (Height - sf.Height) / 2.0f);
+                    }
+                }
+            }
+        }
+
+        public override void SetStyleColor(UIBaseStyle uiColor)
+        {
+            base.SetStyleColor(uiColor);
+            if (uiColor.IsCustom()) return;
+
+            fillColor = uiColor.PlainColor;
+
+            Invalidate();
+        }
+
+        /// <summary>
+        /// 填充颜色，当值为背景色或透明色或空值则不填充
+        /// </summary>
+        [Description("填充颜色"), Category("SunnyUI")]
+        [DefaultValue(typeof(Color), "80, 160, 255")]
+        public Color FillColor
+        {
+            get => fillColor;
+            set => SetFillColor(value);
+        }
+
+        /// <summary>
+        /// 边框颜色
+        /// </summary>
+        [Description("边框颜色"), Category("SunnyUI")]
+        [DefaultValue(typeof(Color), "80, 160, 255")]
+        public Color RectColor
+        {
+            get => rectColor;
+            set => SetRectColor(value);
+        }
+
+        /// <summary>
+        /// 字体颜色
+        /// </summary>
+        [Description("字体颜色"), Category("SunnyUI")]
+        [DefaultValue(typeof(Color), "White")]
+        public override Color ForeColor
+        {
+            get => foreColor;
+            set => SetForeColor(value);
+        }
+    }
+}