using System;
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using System.Drawing;
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using System.Windows.Forms;
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namespace Bro.Common.Helper
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{
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public static class UIHelper
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{
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public static void SetCombo(ComboBox cbo, object dataSource, string display, string value)
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{
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cbo.DataSource = dataSource;
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cbo.DisplayMember = display;
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if (!string.IsNullOrWhiteSpace(value))
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{
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cbo.ValueMember = value;
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}
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}
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public static void SetCombo(ToolStripComboBox cbo, object dataSource, string display, string value)
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{
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cbo.ComboBox.DataSource = dataSource;
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cbo.ComboBox.DisplayMember = display;
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if (!string.IsNullOrWhiteSpace(value))
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{
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cbo.ComboBox.ValueMember = value;
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}
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}
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public static void SetCombo(DataGridViewComboBoxColumn cbo, object dataSource, string display, string value)
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{
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cbo.DataSource = dataSource;
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cbo.DisplayMember = display;
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if (!string.IsNullOrWhiteSpace(value))
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{
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cbo.ValueMember = value;
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}
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}
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}
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#region DataGridView设置列头为复选框
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public class DataGridViewCheckboxHeaderEventArgs : EventArgs
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{
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private bool checkedState = false;
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public bool CheckedState
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{
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get { return checkedState; }
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set { checkedState = value; }
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}
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}
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public delegate void DataGridViewCheckboxHeaderEventHander(object sender, DataGridViewCheckboxHeaderEventArgs e);
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public class DataGridViewCheckboxHeaderCell : DataGridViewColumnHeaderCell
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{
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Point checkBoxLocation;
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Size checkBoxSize;
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bool _checked = false;
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Point _cellLocation = new Point();
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System.Windows.Forms.VisualStyles.CheckBoxState _cbState = System.Windows.Forms.VisualStyles.CheckBoxState.UncheckedNormal;
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public event DataGridViewCheckboxHeaderEventHander OnCheckBoxClicked;
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//绘制列头checkbox
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protected override void Paint(System.Drawing.Graphics graphics,
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System.Drawing.Rectangle clipBounds,
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System.Drawing.Rectangle cellBounds,
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int rowIndex,
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DataGridViewElementStates dataGridViewElementState,
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object value,
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object formattedValue,
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string errorText,
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DataGridViewCellStyle cellStyle,
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DataGridViewAdvancedBorderStyle advancedBorderStyle,
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DataGridViewPaintParts paintParts)
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{
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base.Paint(graphics, clipBounds, cellBounds, rowIndex,
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dataGridViewElementState, value,
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formattedValue, errorText, cellStyle,
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advancedBorderStyle, paintParts);
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Point p = new Point();
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Size s = CheckBoxRenderer.GetGlyphSize(graphics, System.Windows.Forms.VisualStyles.CheckBoxState.UncheckedNormal);
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p.X = cellBounds.Location.X + (cellBounds.Width / 2) - (s.Width / 2) - 1; //列头checkbox的X坐标
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p.Y = cellBounds.Location.Y + (cellBounds.Height / 2) - (s.Height / 2); //列头checkbox的Y坐标
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_cellLocation = cellBounds.Location;
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checkBoxLocation = p;
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checkBoxSize = s;
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if (_checked)
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_cbState = System.Windows.Forms.VisualStyles.CheckBoxState.CheckedNormal;
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else
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_cbState = System.Windows.Forms.VisualStyles.CheckBoxState.UncheckedNormal;
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CheckBoxRenderer.DrawCheckBox(graphics, checkBoxLocation, _cbState);
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}
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///
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/// 点击列头checkbox单击事件
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///
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protected override void OnMouseClick(DataGridViewCellMouseEventArgs e)
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{
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Point p = new Point(e.X + _cellLocation.X, e.Y + _cellLocation.Y);
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if (p.X >= checkBoxLocation.X && p.X <= checkBoxLocation.X + checkBoxSize.Width
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&& p.Y >= checkBoxLocation.Y && p.Y <= checkBoxLocation.Y + checkBoxSize.Height)
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{
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_checked = !_checked;
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//获取列头checkbox的选择状态
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DataGridViewCheckboxHeaderEventArgs ex = new DataGridViewCheckboxHeaderEventArgs();
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ex.CheckedState = _checked;
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object sender = new object();//此处不代表选择的列头checkbox，只是作为参数传递。因为列头checkbox是绘制出来的，无法获得它的实例
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if (OnCheckBoxClicked != null)
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{
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OnCheckBoxClicked(sender, ex);//触发单击事件
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DataGridView.InvalidateCell(this);
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}
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}
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base.OnMouseClick(e);
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}
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}
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#endregion
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}
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