1拼多多皮肤 2打包编译脚本优化 3.头部选中所有的DataGridView列控件
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using System;
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using System.Collections.Generic;
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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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using System.Windows.Forms.VisualStyles;
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namespace TemuKJD.UserComponent
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{
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public class DataGridViewCheckBoxColumnSelectAll : DataGridViewCheckBoxColumn
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{
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private DatagridViewCheckBoxHeaderCell headerCell;
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private bool loaded;
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public event CheckBoxClickedHandler OnCheckBoxClicked;
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int TotalCheckedCheckBoxes = 0;
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bool IsHeaderCheckBoxClicked = false;
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public DataGridViewCheckBoxColumnSelectAll()
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{
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this.headerCell = new DatagridViewCheckBoxHeaderCell();
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base.HeaderCell = this.headerCell;
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this.headerCell.OnCheckBoxClicked += new CheckBoxClickedHandler(this.headerCell_OnCheckBoxClicked);
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this.loaded = false;
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}
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public DataGridViewCheckBoxColumnSelectAll(bool threeState)
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: base(threeState)
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{
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this.headerCell = new DatagridViewCheckBoxHeaderCell();
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base.HeaderCell = this.headerCell;
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}
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/// <summary>
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/// 在DataGridView改变时进行事件的绑定
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/// </summary>
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protected override void OnDataGridViewChanged()
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{
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if (this.DataGridView != null)
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{
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this.DataGridView.CellValueChanged -= DataGridView_CellValueChanged;
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this.DataGridView.CellValueChanged += DataGridView_CellValueChanged;
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this.DataGridView.CurrentCellDirtyStateChanged -= DataGridView_CurrentCellDirtyStateChanged;
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this.DataGridView.CurrentCellDirtyStateChanged += DataGridView_CurrentCellDirtyStateChanged;
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}
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}
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/// <summary>
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/// 在复选的时候进行判断.
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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void DataGridView_CellValueChanged(object sender, DataGridViewCellEventArgs e)
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{
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if (e.RowIndex >= 0 && e.ColumnIndex >= 0)
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{
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if (!IsHeaderCheckBoxClicked)
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RowCheckBoxClick((DataGridViewCheckBoxCell)this.DataGridView[e.ColumnIndex, e.RowIndex]);
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}
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}
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/// <summary>
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/// 在复选框被选中的时候触发该事件, 该事件用于触发ValueChanged事件
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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private void DataGridView_CurrentCellDirtyStateChanged(object sender, EventArgs e)
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{
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if (this.DataGridView.CurrentCell is DataGridViewCheckBoxCell)
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this.DataGridView.CommitEdit(DataGridViewDataErrorContexts.Commit);
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}
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/// <summary>
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/// 复选框被点击时所需要做的操作
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/// </summary>
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/// <param name="checkBox"></param>
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private void RowCheckBoxClick(DataGridViewCheckBoxCell checkBox)
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{
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var head = this.headerCell as DatagridViewCheckBoxHeaderCell;
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if (checkBox != null)
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{
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//计算所有被选中的行的数量
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if ((bool)checkBox.Value && TotalCheckedCheckBoxes < this.DataGridView.RowCount)
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TotalCheckedCheckBoxes++;
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else if (TotalCheckedCheckBoxes > 0)
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TotalCheckedCheckBoxes--;
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//当所有复选框都被选中的时候,列的头上的复选框被选中, 反之则不被选中.
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if (TotalCheckedCheckBoxes < this.DataGridView.RowCount)
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head.IsChecked = false;
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else if (TotalCheckedCheckBoxes == this.DataGridView.RowCount)
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head.IsChecked = true;
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//强制repained
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head.DataGridView.InvalidateCell(head);
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}
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}
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/// <summary>
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/// 头被选中时触发OnCheckBoxClicked事件.
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/// </summary>
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/// <param name="state"></param>
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private void headerCell_OnCheckBoxClicked(bool state)
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{
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if (this.OnCheckBoxClicked != null)
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{
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this.OnCheckBoxClicked(state);
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}
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}
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public delegate void CheckBoxClickedHandler(bool state);
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internal class DatagridViewCheckBoxHeaderCell : DataGridViewColumnHeaderCell
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{
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private CheckBoxState _cbState = CheckBoxState.UncheckedNormal;
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private Point _cellLocation = new Point();
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private bool _checked;
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private Point checkBoxLocation;
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private Size checkBoxSize;
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public bool IsChecked
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{
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get
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{
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return _checked;
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}
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set
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{
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_checked = value;
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if (this._checked)
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{
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this._cbState = CheckBoxState.CheckedNormal;
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}
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else
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{
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this._cbState = CheckBoxState.UncheckedNormal;
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}
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}
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}
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public event CheckBoxClickedHandler OnCheckBoxClicked;
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/// <summary>
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/// 点击列头的时候触发的事件,这里有个判断, 如果点击的位置是复选框则触发OnCheckBoxClicked事件.
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/// </summary>
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/// <param name="e"></param>
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protected override void OnMouseClick(DataGridViewCellMouseEventArgs e)
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{
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Point point = new Point(e.X + this._cellLocation.X, e.Y + this._cellLocation.Y);
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if (((point.X >= this.checkBoxLocation.X) && (point.X <= (this.checkBoxLocation.X + this.checkBoxSize.Width))) && ((point.Y >= this.checkBoxLocation.Y) && (point.Y <= (this.checkBoxLocation.Y + this.checkBoxSize.Height))))
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{
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this._checked = !this._checked;
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bool temp = this._checked;
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if (this.OnCheckBoxClicked != null)
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{
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this.OnCheckBoxClicked(this._checked);
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base.DataGridView.InvalidateCell(this);
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}
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foreach (DataGridViewRow row in base.DataGridView.Rows)
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{
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((DataGridViewCheckBoxCell)row.Cells[e.ColumnIndex]).Value = temp;
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}
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base.DataGridView.RefreshEdit();
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}
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base.OnMouseClick(e);
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}
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/// <summary>
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/// 绘制一个CheckBox
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/// </summary>
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protected override void Paint(Graphics graphics, Rectangle clipBounds, Rectangle cellBounds, int rowIndex, DataGridViewElementStates dataGridViewElementState, object value, object formattedValue, string errorText, DataGridViewCellStyle cellStyle, DataGridViewAdvancedBorderStyle advancedBorderStyle, DataGridViewPaintParts paintParts)
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{
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base.Paint(graphics, clipBounds, cellBounds, rowIndex, dataGridViewElementState, value, formattedValue, errorText, cellStyle, advancedBorderStyle, paintParts);
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Point point = new Point();
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Size glyphSize = CheckBoxRenderer.GetGlyphSize(graphics, CheckBoxState.UncheckedNormal);
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point.X = (cellBounds.Location.X + (cellBounds.Width / 2)) - (glyphSize.Width / 2) - 1; // x位置补偿一个像素(否则在win11中偏右)
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point.Y = (cellBounds.Location.Y + (cellBounds.Height / 2)) - (glyphSize.Height / 2);
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//point.X = cellBounds.Location.X + (cellBounds.Width - glyphSize.Width) / 2; // 放一块以后除以2会有抖动
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//point.Y = cellBounds.Location.Y + (cellBounds.Height - glyphSize.Height) / 2;
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this._cellLocation = cellBounds.Location;
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this.checkBoxLocation = point;
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this.checkBoxSize = glyphSize;
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if (this._checked)
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{
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this._cbState = CheckBoxState.CheckedNormal;
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}
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else
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{
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this._cbState = CheckBoxState.UncheckedNormal;
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}
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CheckBoxRenderer.DrawCheckBox(graphics, this.checkBoxLocation, this._cbState);
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}
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}
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}
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}
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