//选择列的选择事件
protected virtual void ComboBoxColumns_SelectedValueChanged(object sender, EventArgs e)
{
ComboBox dgvFilterHostCom = sender as ComboBox;
if (dgvFilterHostCom.DataSource == null)
{
return;
}
DgvBaseColumnFilter baseColumn = new DgvBaseColumnFilter();
if (dgvFilterHostCom.SelectedValue is KeyValuePair <DgvBaseColumnFilter, string> )
{
baseColumn = ((KeyValuePair <DgvBaseColumnFilter, string>)dgvFilterHostCom.SelectedValue).Key;
}
else if (dgvFilterHostCom.SelectedValue is DgvBaseColumnFilter)
{
baseColumn = dgvFilterHostCom.SelectedValue as DgvBaseColumnFilter;
}
var oSelectedValue = baseColumn.DataGridViewColumn.DataPropertyName;
var iFilterIndex = GetFilterIndexByFilterName(oSelectedValue);
if (iFilterIndex == -1)
{
return;
}
SetCurrentFilterIndex(iFilterIndex);
}
protected override void OnColumnRemoved(DataGridViewColumnEventArgs e)
{
try
{
if (mColumnFilterList == null)
{
return;
}
mColumnFilterList.RemoveAll(k => k == null);
DgvBaseColumnFilter dgvBaseCol = mColumnFilterList.Find(k => k.DataGridViewColumn == e.Column);
if (dgvBaseCol != null)
{
mColumnFilterList.Remove(dgvBaseCol);
}
}
catch (Exception)
{
}
}
/// <summary>
/// Initializes a new instance of the <see cref="ColumnFilterEventArgs"/> class.
/// </summary>
/// <param name="Column">The DstaGridView column.</param>
/// <param name="ColumnFilter">The column filter instance.</param>
public ColumnFilterEventArgs(DataGridViewColumn Column, DgvBaseColumnFilter ColumnFilter)
{
this.mColumn = Column;
this.mColumnFilter = ColumnFilter;
this.mHandled = Handled;
}
private void CreateColumnFilter(DataGridViewColumn c)
{
if (!mAutoCreateFilters)
{
return;
}
//Raise the event about column filter creation
DgvBaseColumnFilter baseColFilter = new DgvBaseColumnFilter();
switch (c.GetType().Name)
{
case "DataGridViewComboBoxColumn":
baseColFilter = new DgvComboBoxColumnFilter();
break;
case "DataGridViewCheckBoxColumn":
baseColFilter = new DgvCheckBoxColumnFilter();
break;
case "DataGridViewTextBoxColumn":
baseColFilter = new DgvTextBoxColumnFilter();
if (_DataSourceView.Table != null &&
_DataSourceView.Table.Columns[c.DataPropertyName].DataType == typeof(DateTime))
{
baseColFilter = new DgvDateColumnFilter();
}
break;
}
ColumnFilterEventArgs e = new ColumnFilterEventArgs(c, baseColFilter);
if (ColumnFilterAdding != null)
{
ColumnFilterAdding(this, e);
}
mColumnFilterList.Insert(c.Index, e.ColumnFilter);
if (e.ColumnFilter != null)// == null when non-data column
{
if (ColumnFilterAdded != null)
{
ColumnFilterAdded(this, e);
}
e.ColumnFilter.Init(this, _DataSourceView, c.Index);
ContextMenuStrip oMenuStrip = new ContextMenuStrip();
MyToolStripMenuItem oToolAscding, oToolDescending, oToolFilter, oToolFilterDelete;
oToolAscding =
new MyToolStripMenuItem("升序", ((System.Drawing.Image)(resources.GetObject("Sort_Ascending"))),
new EventHandler(mMenuStripSort_Click));
oToolAscding.Name = "toolscriptmenuitemasc";
oToolAscding.DgvBaseColumn = e.ColumnFilter;
oToolAscding.Size = new System.Drawing.Size(213, 22);
oToolAscding.SortDirection = ListSortDirection.Ascending;
oMenuStrip.Items.Add(oToolAscding);
oToolDescending =
new MyToolStripMenuItem("降序", ((System.Drawing.Image)(resources.GetObject("Sort_Descending"))),
new EventHandler(mMenuStripSort_Click));
oToolDescending.Name = "toolscriptmenuitemdesc";
oToolDescending.DgvBaseColumn = e.ColumnFilter;
oToolDescending.Size = new System.Drawing.Size(213, 22);
oToolDescending.SortDirection = ListSortDirection.Descending;
oMenuStrip.Items.Add(oToolDescending);
oToolFilter =
new MyToolStripMenuItem("过滤", ((System.Drawing.Image)(resources.GetObject("Filter_Add"))),
new EventHandler(mMenuStripFilter_Click));
oToolFilter.Name = "toolscriptmenuitemFilter";
oToolFilter.DgvBaseColumn = e.ColumnFilter;
oMenuStrip.Items.Add(oToolFilter);
oToolFilterDelete =
new MyToolStripMenuItem("取消过滤", ((System.Drawing.Image)(resources.GetObject("Filter_Delete"))),
new EventHandler(mMenuStripFilterDelete_Click));
oToolFilterDelete.Name = "toolscriptmenuitemFilterDelete";
oToolFilterDelete.DgvBaseColumn = e.ColumnFilter;
oMenuStrip.Items.Add(oToolFilterDelete);
c.HeaderCell.ContextMenuStrip = oMenuStrip;
}
if (mColumnFilterList == null)
{
FilterHost.ComboBoxColumns.DataSource = null;
return;
}
Dictionary <DgvBaseColumnFilter, string> dicCombox = new Dictionary <DgvBaseColumnFilter, string>();
foreach (DgvBaseColumnFilter oCol in mColumnFilterList)
{
dicCombox.Add(oCol, oCol.OriginalDataGridViewColumnHeaderText);
}
BindingSource bs = new BindingSource();
bs.DataSource = dicCombox;
FilterHost.ComboBoxColumns.DataSource = bs;
FilterHost.ComboBoxColumns.ValueMember = "Key";
FilterHost.ComboBoxColumns.DisplayMember = "Value";
}