temu客户端程序
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Drawing;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Forms;
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namespace LittleRabbit.Extension
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{
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public static class DataGridViewExtension
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{
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public static object GetCellValueFromColumnName(this DataGridViewCellCollection CellCollection, string name)
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{
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return CellCollection.Cast<DataGridViewCell>().FirstOrDefault(c => c.OwningColumn.Name == name)?.Value;
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}
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public static CheckBox AddSelectorColumn(this DataGridView dgv, string columnName = "Selected", Action<DataGridViewColumn> addHeaderCheckBoxOverride = null)
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{
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if (dgv.Columns[columnName] == null)
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{
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//var dt = dgv.Table();
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//var dcol = new DataColumn(columnName, typeof(bool));
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//dt.Columns.Add(dcol);
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//dt.ColumnChanged += (s, e) =>
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//{
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// var chCols = e.Row.GetChangedColumns();
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// if (chCols.Count == 1 && chCols[0].Equals(dcol))
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// e.Row.AcceptChanges();
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//};
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}
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var col = dgv.Columns[columnName];
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col.HeaderText = "";
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col.ReadOnly = false;
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if (addHeaderCheckBoxOverride != null)
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{
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addHeaderCheckBoxOverride(col);
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return null;
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}
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else
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{
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return col.AddHeaderCheckBox();
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}
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}
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public static CheckBox AddHeaderCheckBox(this DataGridViewColumn column, HorizontalAlignment align = HorizontalAlignment.Center, int leftBorderOffset = 0, int rightBorderOffset = 0, Func<object, bool> getValue = null, Action<object, bool> setValue = null, bool isSetCheckedChangedEvent = true, CheckBox checkBox = null, bool isClearHeaderText = false)
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{
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if (column.DataGridView == null) throw new ArgumentNullException("First you need to add the column to grid.");
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// Creating checkbox without panel
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if (checkBox == null)
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{
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checkBox = new CheckBox();
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checkBox.Name = "chk" + column.Name;
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}
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checkBox.Size = new Size(15, 15);
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checkBox.BackColor = Color.Transparent;
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checkBox.Enabled = true;
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// Reset properties
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checkBox.Padding = new Padding(0);
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checkBox.Margin = new Padding(0);
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checkBox.Text = "";
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if (isClearHeaderText)
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column.HeaderText = "";
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var changedByUser = true;
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var dgv = column.DataGridView;
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if (isSetCheckedChangedEvent)
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{
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checkBox.CheckedChanged += (s, e) =>
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{
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if (changedByUser)
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{
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try
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{
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changedByUser = false;
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if (dgv.IsCurrentCellInEditMode && dgv.CurrentCell.OwningColumn.Name.Equals(column.Name))
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dgv.EndEdit();
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var dgvRows = new List<DataGridViewRow>((dgv.SelectedRows.Count < 2 ? (ICollection)dgv.Rows : dgv.SelectedRows).Cast<DataGridViewRow>());
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if (column.IsDataBound)
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{
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//adding to list because of BindingSource sort by that column
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var boundItems = new List<object>();
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var areDataRows = dgvRows.Count < 1 || dgvRows[0].DataBoundItem is DataRowView;
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if (areDataRows)
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{
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foreach (DataGridViewRow row in dgvRows)
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boundItems.Add(((DataRowView)row.DataBoundItem).Row);
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foreach (DataRow dr in boundItems)
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{
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var val = dr[column.DataPropertyName];
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if ((val is bool && (bool)val) != checkBox.Checked)
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dr[column.DataPropertyName] = checkBox.Checked;
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}
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}
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else
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{
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foreach (DataGridViewRow row in dgvRows)
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boundItems.Add(row.DataBoundItem);
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foreach (var item in boundItems)
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{
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var val = getValue(item);
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if (val != checkBox.Checked)
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setValue(item, checkBox.Checked);
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}
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}
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}
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else
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{
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foreach (DataGridViewRow dgr in dgvRows)
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{
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var cell = dgr.Cells[column.Name];
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if ((cell.Value is bool && (bool)cell.Value) != checkBox.Checked)
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cell.Value = checkBox.Checked;
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}
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}
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}
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finally
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{
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changedByUser = true;
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}
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}
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};
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}
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// Add checkbox to datagrid cell
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dgv.Controls.Add(checkBox);
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Action onColResize = () =>
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{
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var colCheck = dgv.Columns[column.Name];
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if (colCheck == null) return;
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int colLeft = (dgv.RowHeadersVisible ? dgv.RowHeadersWidth : 0) - (colCheck.Frozen ? 0 : dgv.HorizontalScrollingOffset);
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foreach (DataGridViewColumn col in dgv.Columns)
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{
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if (col.DisplayIndex >= colCheck.DisplayIndex) break;
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if (!col.Visible) continue;
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colLeft += col.Width;
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}
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var newPoint = new Point(colLeft, dgv.ColumnHeadersHeight / 2 - checkBox.Height / 2);
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if (align == HorizontalAlignment.Left)
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newPoint.X += 3;
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else if (align == HorizontalAlignment.Center)
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newPoint.X += colCheck.Width / 2 - checkBox.Width / 2;
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else if (align == HorizontalAlignment.Right)
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newPoint.X += colCheck.Width - checkBox.Width - 3;
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var minLeft = colLeft + leftBorderOffset;
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var maxLeft = colLeft + colCheck.Width - checkBox.Width + rightBorderOffset;
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if (newPoint.X < minLeft) newPoint.X = minLeft;
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if (newPoint.X > maxLeft) newPoint.X = maxLeft;
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checkBox.Location = newPoint;
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checkBox.Visible = colCheck.Visible;
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};
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dgv.ColumnWidthChanged += (s, e) => onColResize();
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dgv.ColumnHeadersHeightChanged += (s, e) => onColResize();
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dgv.Scroll += (s, e) => onColResize();
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dgv.Resize += (s, e) => onColResize();
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dgv.Sorted += (s, e) => onColResize();
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dgv.RowHeadersWidthChanged += (s, e) => onColResize();
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dgv.ColumnStateChanged += (s, e) => onColResize();
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Action<object> onDataChanged = (e) =>
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{
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if (!changedByUser) return;
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if (e is DataColumnChangeEventArgs)
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{
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if (!((DataColumnChangeEventArgs)e).Column.ColumnName.Equals(column.Name))
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return;
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}
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else if (e is ListChangedEventArgs)
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{
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var prop = ((ListChangedEventArgs)e).PropertyDescriptor;
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if (prop != null && !prop.Name.Equals(column.DataPropertyName))
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return;
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}
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bool allAreTrue = true;
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foreach (DataGridViewRow row in dgv.SelectedRows.Count < 2 ? (ICollection)dgv.Rows : dgv.SelectedRows)
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{
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var val = row.Cells[column.Name].Value;
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if (!(val is bool) || !(bool)val)
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{
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allAreTrue = false;
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break;
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}
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}
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try
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{
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changedByUser = false;
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var tag = checkBox.Tag;
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checkBox.Tag = "AUTO";
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try
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{
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if (isSetCheckedChangedEvent)
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{
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checkBox.Checked = allAreTrue;
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}
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}
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finally { checkBox.Tag = tag; }
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}
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finally
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{
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changedByUser = true;
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}
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};
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dgv.CellClick += (s, e) => onDataChanged(e);
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dgv.CellContentClick += (s, e) => onDataChanged(e);
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dgv.SelectionChanged += (s, e) => onDataChanged(e);
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if (dgv.DataSource is BindingSource)
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((BindingSource)dgv.DataSource).ListChanged += (s, e) => onDataChanged(e);
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else if (dgv.DataSource is DataSet)
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((DataSet)dgv.DataSource).Tables[dgv.DataMember].ColumnChanged += (s, e) => onDataChanged(e);
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else if (dgv.DataSource is DataTable)
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((DataTable)dgv.DataSource).ColumnChanged += (s, e) => onDataChanged(e);
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onColResize();
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return checkBox;
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}
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}
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}
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