/// <include file='doc\DataGridView.uex' path='docs/doc[@for="DataGridView.OnAutoSizeColumnModeChanged"]/*' />
protected virtual void OnAutoSizeColumnModeChanged(DataGridViewAutoSizeColumnModeEventArgs e)
{
DataGridViewColumn dataGridViewColumn = e.Column;
if (e.Column == null)
{
throw new InvalidOperationException(SR.GetString(SR.InvalidNullArgument, "e.Column"));
}
DataGridViewAutoSizeColumnMode autoSizeColumnMode = dataGridViewColumn.InheritedAutoSizeMode;
Debug.Assert(autoSizeColumnMode != DataGridViewAutoSizeColumnMode.NotSet);
DataGridViewAutoSizeColumnMode previousInheritedMode = e.PreviousMode;
bool previousInheritedModeAutoSized = previousInheritedMode != DataGridViewAutoSizeColumnMode.Fill &&
previousInheritedMode != DataGridViewAutoSizeColumnMode.None &&
previousInheritedMode != DataGridViewAutoSizeColumnMode.NotSet;
if (autoSizeColumnMode == DataGridViewAutoSizeColumnMode.Fill ||
previousInheritedMode == DataGridViewAutoSizeColumnMode.Fill)
{
// UsedFillWeight values need to be updated
this.dataGridViewState2[DATAGRIDVIEWSTATE2_usedFillWeightsDirty] = true;
}
bool fixedHeight = (((DataGridViewAutoSizeRowsModeInternal)this.autoSizeRowsMode) & DataGridViewAutoSizeRowsModeInternal.AllColumns) == 0;
if (autoSizeColumnMode != DataGridViewAutoSizeColumnMode.None)
{
if (autoSizeColumnMode != DataGridViewAutoSizeColumnMode.Fill)
{
if (!previousInheritedModeAutoSized)
{
// Save current column width for later reuse
dataGridViewColumn.CachedThickness = dataGridViewColumn.Thickness;
}
AutoResizeColumnInternal(dataGridViewColumn.Index,
(DataGridViewAutoSizeColumnCriteriaInternal) autoSizeColumnMode,
fixedHeight);
}
}
else if (dataGridViewColumn.Thickness != dataGridViewColumn.CachedThickness && previousInheritedModeAutoSized)
{
// Restoring cached column width
dataGridViewColumn.ThicknessInternal = Math.Max(dataGridViewColumn.MinimumWidth, dataGridViewColumn.CachedThickness);
}
// Auto fill columns if needed
PerformLayoutPrivate(false /*useRowShortcut*/, true /*computeVisibleRows*/, true /*invalidInAdjustFillingColumns*/, false /*repositionEditingControl*/);
// Autosize rows and column headers if needed
if (!fixedHeight)
{
AdjustShrinkingRows(this.autoSizeRowsMode, true /*fixedWidth*/, true /*internalAutosizing*/);
if (this.ColumnHeadersHeightSizeMode == DataGridViewColumnHeadersHeightSizeMode.AutoSize)
{
AutoResizeColumnHeadersHeight(dataGridViewColumn.Index, true /*fixedRowHeadersWidth*/, true /*fixedColumnWidth*/);
}
// Column gets autosized with 1 degree of freedom this time.
if (autoSizeColumnMode != DataGridViewAutoSizeColumnMode.None && autoSizeColumnMode != DataGridViewAutoSizeColumnMode.Fill)
{
AutoResizeColumnInternal(dataGridViewColumn.Index,
(DataGridViewAutoSizeColumnCriteriaInternal)autoSizeColumnMode,
true /*fixedHeight*/);
}
}
DataGridViewAutoSizeColumnModeEventHandler eh = this.Events[EVENT_DATAGRIDVIEWAUTOSIZECOLUMNMODECHANGED] as DataGridViewAutoSizeColumnModeEventHandler;
if (eh != null && !this.dataGridViewOper[DATAGRIDVIEWOPER_inDispose] && !this.IsDisposed)
{
eh(this, e);
}
}
protected internal virtual void OnAutoSizeColumnModeChanged (DataGridViewAutoSizeColumnModeEventArgs e)
{
DataGridViewAutoSizeColumnModeEventHandler eh = (DataGridViewAutoSizeColumnModeEventHandler)(Events [AutoSizeColumnModeChangedEvent]);
if (eh != null)
eh (this, e);
}
internal void OnAutoSizeColumnModeChanged(DataGridViewColumn dataGridViewColumn, DataGridViewAutoSizeColumnMode previousInheritedMode)
{
Debug.Assert(dataGridViewColumn != null);
DataGridViewAutoSizeColumnModeEventArgs dgvascme = new DataGridViewAutoSizeColumnModeEventArgs(dataGridViewColumn, previousInheritedMode);
OnAutoSizeColumnModeChanged(dgvascme);
}
/// <summary>
/// Extends BeginInvoke so that when a state object is not needed, null does not need to be passed.
/// <example>
/// datagridviewautosizecolumnmodeeventhandler.BeginInvoke(sender, e, callback);
/// </example>
/// </summary>
public static IAsyncResult BeginInvoke(this DataGridViewAutoSizeColumnModeEventHandler datagridviewautosizecolumnmodeeventhandler, Object sender, DataGridViewAutoSizeColumnModeEventArgs e, AsyncCallback callback)
{
if(datagridviewautosizecolumnmodeeventhandler == null) throw new ArgumentNullException("datagridviewautosizecolumnmodeeventhandler");
return datagridviewautosizecolumnmodeeventhandler.BeginInvoke(sender, e, callback, null);
}
protected virtual void OnAutoSizeColumnModeChanged(DataGridViewAutoSizeColumnModeEventArgs e);
internal void OnAutoSizeColumnModeChanged(DataGridViewColumn dataGridViewColumn, DataGridViewAutoSizeColumnMode previousInheritedMode)
{
DataGridViewAutoSizeColumnModeEventArgs e = new DataGridViewAutoSizeColumnModeEventArgs(dataGridViewColumn, previousInheritedMode);
this.OnAutoSizeColumnModeChanged(e);
}
protected virtual void OnAutoSizeColumnModeChanged(DataGridViewAutoSizeColumnModeEventArgs e)
{
DataGridViewColumn column = e.Column;
if (e.Column == null)
{
throw new InvalidOperationException(System.Windows.Forms.SR.GetString("InvalidNullArgument", new object[] { "e.Column" }));
}
DataGridViewAutoSizeColumnMode inheritedAutoSizeMode = column.InheritedAutoSizeMode;
DataGridViewAutoSizeColumnMode previousMode = e.PreviousMode;
bool flag = ((previousMode != DataGridViewAutoSizeColumnMode.Fill) && (previousMode != DataGridViewAutoSizeColumnMode.None)) && (previousMode != DataGridViewAutoSizeColumnMode.NotSet);
if ((inheritedAutoSizeMode == DataGridViewAutoSizeColumnMode.Fill) || (previousMode == DataGridViewAutoSizeColumnMode.Fill))
{
this.dataGridViewState2[0x4000000] = true;
}
bool fixedHeight = (this.autoSizeRowsMode & ((DataGridViewAutoSizeRowsMode) 2)) == DataGridViewAutoSizeRowsMode.None;
switch (inheritedAutoSizeMode)
{
case DataGridViewAutoSizeColumnMode.None:
if ((column.Thickness != column.CachedThickness) && flag)
{
column.ThicknessInternal = Math.Max(column.MinimumWidth, column.CachedThickness);
}
break;
case DataGridViewAutoSizeColumnMode.Fill:
break;
default:
if (!flag)
{
column.CachedThickness = column.Thickness;
}
this.AutoResizeColumnInternal(column.Index, (DataGridViewAutoSizeColumnCriteriaInternal) inheritedAutoSizeMode, fixedHeight);
break;
}
this.PerformLayoutPrivate(false, true, true, false);
if (!fixedHeight)
{
this.AdjustShrinkingRows(this.autoSizeRowsMode, true, true);
if (this.ColumnHeadersHeightSizeMode == DataGridViewColumnHeadersHeightSizeMode.AutoSize)
{
this.AutoResizeColumnHeadersHeight(column.Index, true, true);
}
if ((inheritedAutoSizeMode != DataGridViewAutoSizeColumnMode.None) && (inheritedAutoSizeMode != DataGridViewAutoSizeColumnMode.Fill))
{
this.AutoResizeColumnInternal(column.Index, (DataGridViewAutoSizeColumnCriteriaInternal) inheritedAutoSizeMode, true);
}
}
DataGridViewAutoSizeColumnModeEventHandler handler = base.Events[EVENT_DATAGRIDVIEWAUTOSIZECOLUMNMODECHANGED] as DataGridViewAutoSizeColumnModeEventHandler;
if (((handler != null) && !this.dataGridViewOper[0x100000]) && !base.IsDisposed)
{
handler(this, e);
}
}
