private void treeList1_CustomDrawNodeCheckBox(object sender, CustomDrawNodeCheckBoxEventArgs e)
{
if (e.Node.Level <= 1)
{
e.ObjectArgs.State = DevExpress.Utils.Drawing.ObjectState.Disabled;
}
}
private void m_TreeList_CustomDrawNodeCheckBox(object sender, CustomDrawNodeCheckBoxEventArgs e)
{
if (e.Node.HasChildren)
{
e.Handled = true;
}
}
protected override void RaiseCustomDrawNodeCheckBox(CustomDrawNodeCheckBoxEventArgs e)
{
var canCheckNode = CanCheckNode(e.Node);
if (canCheckNode)
return;
e.ObjectArgs.State = DevExpress.Utils.Drawing.ObjectState.Disabled;
e.Handled = true;
base.RaiseCustomDrawNodeCheckBox(e);
}
void treeList_CustomDrawNodeCheckBox(object sender, CustomDrawNodeCheckBoxEventArgs e)
{
bool canCheckNode = CanCheckNode(e.Node);
if (canCheckNode)
{
return;
}
e.ObjectArgs.State = DevExpress.Utils.Drawing.ObjectState.Disabled;
e.Handled = NeedHide;
}
static void TreeListCustomDrawNodeCheckBox(object sender, CustomDrawNodeCheckBoxEventArgs e)
{
var disabledIds = new[] { 3 };
if (!(sender is TreeList treeList) ||
!treeList.OptionsView.ShowCheckBoxes ||
!(treeList.GetDataRecordByNode(e.Node) is Data data) ||
!disabledIds.Contains(data.Id))
{
return;
}
e.ObjectArgs.State = ObjectState.Disabled;
}
/// <summary>
/// 设定TreeList控件是否显示选项
/// </summary>
private void treeListDesignBom_CustomDrawNodeCheckBox(object sender, CustomDrawNodeCheckBoxEventArgs e)
{
try
{
if (e.Node == null)
{
return;
}
string reParentStr = DataTypeConvert.GetString(e.Node["ReParent"]);
if (reParentStr == "")
{
e.Handled = false;
}
else
{
e.Handled = true;
}
}
catch (Exception ex)
{
ExceptionHandler.HandleException(this.Text + "--设定TreeList控件是否显示选项错误。", ex);
}
}
/// <summary>
/// 隐藏CheckBox
/// 说明
/// 在CustomDrawNodeCheckBox事件中使用
/// eg:
/// TreeList _curTree = (TreeList)sender;
/// _curTree.HideCheckBox(n => n.GetNodeType() == NodeType.Area || n.GetNodeType() == NodeType.CabsGroupRoot, e);
/// </summary>
/// <param name="tree">TreeList</param>
/// <param name="conditionHanlder">委托</param>
/// <param name="e">CustomDrawNodeCheckBoxEventArgs</param>
public static void HideCheckBox(this TreeListNode tree, Predicate <TreeListNode> conditionHanlder, CustomDrawNodeCheckBoxEventArgs e)
{
if (conditionHanlder(e.Node))
{
e.Handled = true;
}
}
/// <summary>
/// 禁用CheckBox
/// 说明
/// 在CustomDrawNodeCheckBox事件中使用
/// </summary>
/// <param name="tree">TreeList</param>
/// <param name="conditionHanlder">委托</param>
/// <param name="e">CustomDrawNodeCheckBoxEventArgs</param>
public static void DisabledCheckBox(this TreeListNode tree, Predicate <TreeListNode> conditionHanlder, CustomDrawNodeCheckBoxEventArgs e)
{
if (conditionHanlder(e.Node))
{
e.ObjectArgs.State = ObjectState.Disabled;
}
}
