C# 如何在ASP.Net中创建具有子控件集合的控件
我正在尝试为asp.net开发一个自定义控件,该控件将具有以下标记:C# 如何在ASP.Net中创建具有子控件集合的控件,c#,asp.net,collections,controls,custom-controls,C#,Asp.net,Collections,Controls,Custom Controls,我正在尝试为asp.net开发一个自定义控件,该控件将具有以下标记: <bk:ControlMenu ID="cmTest" runat="server" Width="400px"> <Items> <asp:Textbox> <asp:Checkbox> [ List of controls... ] </Items> </bk:Co
<bk:ControlMenu ID="cmTest" runat="server" Width="400px">
<Items>
<asp:Textbox>
<asp:Checkbox>
[ List of controls... ]
</Items>
</bk:ControlMenu>
[控制清单…]
什么样的属性允许我在开发控件时执行此操作?(项目集合是有问题的部分)。标准Web用户控件中不能有嵌套元素。您需要开发一个自定义服务器控件来实现这一点。要在自定义服务器控件中允许嵌套元素,需要使用
PersistenceMode
属性并将其设置为InnerProperty
/// <summary>
/// Gets the columns collection.
/// </summary>
[Browsable(true)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
[PersistenceMode(PersistenceMode.InnerProperty)]
public ItemCollection Items
{
get
{
if (itemCollection == null)
{
if (itemArrayList == null)
{
this.EnsureChildControls();
if (itemArrayList == null)
itemArrayList = new ArrayList();
}
itemCollection = new ItemCollection(itemArrayList);
}
return itemCollection;
}
}
//
///获取列集合。
///
[可浏览(正确)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
[PersistenceMode(PersistenceMode.InnerProperty)]
公共物品收集项目
{
得到
{
if(itemCollection==null)
{
if(itemArrayList==null)
{
this.ensureChildControl();
if(itemArrayList==null)
itemArrayList=新的ArrayList();
}
itemCollection=新的itemCollection(itemArrayList);
}
回收物品;
}
}
下面是我创建的控件的一个示例:
调度网格控制
/// <summary>
/// Gets the columns collection.
/// </summary>
[Browsable(true)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
[PersistenceMode(PersistenceMode.InnerProperty)]
public ScheduleGridColumnCollection Columns
{
get
{
if (scheduleColumnsCollection == null)
{
if (scheduleColumnsArrayList == null)
{
this.EnsureChildControls();
if (scheduleColumnsArrayList == null)
scheduleColumnsArrayList = new ArrayList();
}
scheduleColumnsCollection = new ScheduleGridColumnCollection(scheduleColumnsArrayList);
}
return scheduleColumnsCollection;
}
}
//
///获取列集合。
///
[可浏览(正确)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
[PersistenceMode(PersistenceMode.InnerProperty)]
公共ScheduleGridColumnCollection列
{
得到
{
if(scheduleColumnsCollection==null)
{
if(scheduleColumnsArrayList==null)
{
this.ensureChildControl();
if(scheduleColumnsArrayList==null)
scheduleColumnsArrayList=新建ArrayList();
}
scheduleColumnsCollection=新ScheduleGridColumnSCollection(scheduleColumnsArrayList);
}
返回scheduleColumnsCollection;
}
}
ScheduleGridColumn类
#region schedule column
[PersistChildren(true)]
public sealed class ScheduleGridColumn : DataGridColumn, INamingContainer
{
#region private member variables
private bool editModeEnabled;
private bool aggregateColumn;
private string uniqueName;
private string dataFieldName;
private string aggregateKey;
private string dataFormatString;
private ITemplate editTemplate = null;
#endregion
#region constructor
/// <summary>
/// Initializes the GridColumn object using default values.
/// </summary>
public ScheduleGridColumn()
{
//initialize other fields to defaults
dataFieldName = String.Empty;
dataFormatString = String.Empty;
uniqueName = String.Empty;
//disable edit mode by default
editModeEnabled = false;
}
#endregion
#region properties
/// <summary>
/// Gets or sets the edit template.
/// </summary>
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible),
PersistenceMode(PersistenceMode.InnerProperty),
TemplateInstance(TemplateInstance.Single)]
public ITemplate EditTemplate
{
get
{
return editTemplate;
}
set
{
editTemplate = value;
}
}
/// <summary>
/// Gets or sets the unique name.
/// </summary>
[Browsable(true)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public string UniqueName
{
get
{
return uniqueName;
}
set
{
uniqueName = value;
}
}
/// <summary>
/// Gets or sets the name of the data field.
/// </summary>
[Browsable(true)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public string DataField
{
get
{
return dataFieldName;
}
set
{
dataFieldName = value;
}
}
/// <summary>
/// Gets or sets the format string used to format the data.
/// </summary>
[Browsable(true)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public string DataFormatString
{
get
{
return dataFormatString;
}
set
{
dataFormatString = value;
}
}
/// <summary>
/// Gets or sets a value indicating whether the item
/// is in edit mode.
/// </summary>
[Browsable(true)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public bool EditModeEnabled
{
get
{
return editModeEnabled;
}
set
{
editModeEnabled = value;
}
}
/// <summary>
/// Gets or sets a value indicating whether the item should be aggregated.
/// </summary>
[Browsable(true)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public bool AggregateColumn
{
get
{
return aggregateColumn;
}
set
{
aggregateColumn = value;
}
}
/// <summary>
/// Gets or sets the aggregate key.
/// </summary>
[Browsable(true)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public string AggregateKey
{
get
{
return aggregateKey;
}
set
{
aggregateKey = value;
}
}
#endregion
}
#endregion
#region schedule column collection
[PersistChildren(true)]
public sealed class ScheduleGridColumnCollection : ICollection
{
#region member variables
private ArrayList ItemArray;
private string columnGroupTitle;
#endregion
#region constructors
public ScheduleGridColumnCollection(ArrayList items)
{
ItemArray = items;
}
#endregion
#region methods
/// <summary>
/// Finds the column corresponding to the data field.
/// </summary>
/// <param name="DataFieldName"></param>
/// <returns></returns>
public ScheduleGridColumn FindColumnDataField(string dataFieldName)
{
ScheduleGridColumn column = new ScheduleGridColumn();
foreach (ScheduleGridColumn item in ItemArray.Cast<ScheduleGridColumn>())
{
if (item.DataField == dataFieldName)
{
column = item;
break;
}
}
return column;
}
public bool ContainsColumnWithDataField(string dataFieldName)
{
foreach (ScheduleGridColumn item in ItemArray.Cast<ScheduleGridColumn>())
if (item.DataField == dataFieldName)
return true;
return false;
}
/// <summary>
/// Adds an item to the collection.
/// </summary>
/// <param name="item"></param>
public void Add(ScheduleGridColumn item)
{
ItemArray.Add(item);
}
public void AddRange(ScheduleGridColumnCollection itemCollection)
{
foreach (ScheduleGridColumn item in itemCollection)
ItemArray.Add(item);
}
/// <summary>
/// Clears all items from the collection.
/// </summary>
public void Clear()
{
ItemArray.Clear();
}
/// <summary>
/// Returns the enumerated equivalent of the collection.
/// </summary>
/// <returns></returns>
public IEnumerator GetEnumerator()
{
return ItemArray.GetEnumerator();
}
/// <summary>
/// Copies the collection to the array parameter.
/// </summary>
/// <param name="array"></param>
/// <param name="index"></param>
public void CopyTo(Array array, int index)
{
ItemArray.CopyTo(array, index);
}
#endregion
#region properties
/// <summary>
/// Gets the schedule column located at the specified index.
/// </summary>
/// <param name="index"></param>
/// <returns></returns>
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public ScheduleGridColumn this[int index]
{
get
{
return (ScheduleGridColumn)ItemArray[index];
}
}
/// <summary>
/// Gets a schedule column from the collection based on a unique name.
/// </summary>
/// <param name="uniqueName"></param>
/// <returns></returns>
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public ScheduleGridColumn this[string uniqueName]
{
get
{
ScheduleGridColumn dataColumn = null;
foreach (object item in ItemArray)
if (((ScheduleGridColumn)item).UniqueName == uniqueName)
dataColumn = (ScheduleGridColumn)item;
return dataColumn;
}
}
/// <summary>
/// Gets the total number of items in the collection.
/// </summary>
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public int Count
{
get
{
return ItemArray.Count;
}
}
/// <summary>
/// Gets a value indicating whether the collection is read only.
/// </summary>
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public bool IsReadOnly
{
get
{
return false;
}
}
/// <summary>
/// Gets a value indicating whether the collection is synchronized.
/// </summary>
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public bool IsSynchronized
{
get
{
return false;
}
}
/// <summary>
/// Gets the sync root object.
/// </summary>
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public object SyncRoot
{
get
{
return this;
}
}
/// <summary>
/// Gets or sets the column group title.
/// </summary>
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
[Browsable(true)]
public string ColumnGroupTitle
{
get
{
return columnGroupTitle;
}
set
{
columnGroupTitle = value;
}
}
#endregion
}
#endregion
#地区明细栏
[儿童(对)]
公共密封类ScheduleGridColumn:DataGridColumn,INamingContainer
{
#区域私有成员变量
启用私有布尔编辑模式;
私有布尔集合列;
私有字符串唯一名称;
私有字符串dataFieldName;
私有字符串聚合键;
私有字符串dataFormatString;
私有ITemplate editTemplate=null;
#端区
#区域构造函数
///
///使用默认值初始化GridColumn对象。
///
公共ScheduleGridColumn()
{
//将其他字段初始化为默认值
dataFieldName=String.Empty;
dataFormatString=String.Empty;
uniqueName=String.Empty;
//默认情况下禁用编辑模式
editModeEnabled=false;
}
#端区
#区域属性
///
///获取或设置编辑模板。
///
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible),
PersistenceMode(PersistenceMode.InnerProperty),
TemplateInstance(TemplateInstance.Single)]
公共ITemplate编辑模板
{
得到
{
返回编辑模板;
}
设置
{
编辑模板=值;
}
}
///
///获取或设置唯一名称。
///
[可浏览(正确)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
公共字符串唯一名称
{
得到
{
返回唯一名称;
}
设置
{
uniqueName=值;
}
}
///
///获取或设置数据字段的名称。
///
[可浏览(正确)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
公共字符串数据字段
{
得到
{
返回dataFieldName;
}
设置
{
dataFieldName=值;
}
}
///
///获取或设置用于格式化数据的格式字符串。
///
[可浏览(正确)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
公共字符串DataFormatString
{
得到
{
返回dataFormatString;
}
设置
{
dataFormatString=值;
}
}
///
///获取或设置一个值,该值指示项
///处于编辑模式。
///
[可浏览(正确)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
公共布尔编辑模式已启用
{
得到
{
返回编辑模式启用;
}
设置
{
editModeEnabled=值;
}
}
///
///获取或设置一个值,该值指示是否应聚合该项。
///
[可浏览(正确)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
公共图书馆
{
得到
{
返回集合列;
}
设置
{
aggregateColumn=值;
}
}
///
///获取或设置聚合键。
///
[可浏览(正确)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
公共字符串聚合键
{
得到
{
返回聚合键;
}
设置
{
聚合键=值;
}
}
#端区
}
#端区
ScheduleGridColumnCollection类
#region schedule column
[PersistChildren(true)]
public sealed class ScheduleGridColumn : DataGridColumn, INamingContainer
{
#region private member variables
private bool editModeEnabled;
private bool aggregateColumn;
private string uniqueName;
private string dataFieldName;
private string aggregateKey;
private string dataFormatString;
private ITemplate editTemplate = null;
#endregion
#region constructor
/// <summary>
/// Initializes the GridColumn object using default values.
/// </summary>
public ScheduleGridColumn()
{
//initialize other fields to defaults
dataFieldName = String.Empty;
dataFormatString = String.Empty;
uniqueName = String.Empty;
//disable edit mode by default
editModeEnabled = false;
}
#endregion
#region properties
/// <summary>
/// Gets or sets the edit template.
/// </summary>
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible),
PersistenceMode(PersistenceMode.InnerProperty),
TemplateInstance(TemplateInstance.Single)]
public ITemplate EditTemplate
{
get
{
return editTemplate;
}
set
{
editTemplate = value;
}
}
/// <summary>
/// Gets or sets the unique name.
/// </summary>
[Browsable(true)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public string UniqueName
{
get
{
return uniqueName;
}
set
{
uniqueName = value;
}
}
/// <summary>
/// Gets or sets the name of the data field.
/// </summary>
[Browsable(true)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public string DataField
{
get
{
return dataFieldName;
}
set
{
dataFieldName = value;
}
}
/// <summary>
/// Gets or sets the format string used to format the data.
/// </summary>
[Browsable(true)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public string DataFormatString
{
get
{
return dataFormatString;
}
set
{
dataFormatString = value;
}
}
/// <summary>
/// Gets or sets a value indicating whether the item
/// is in edit mode.
/// </summary>
[Browsable(true)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public bool EditModeEnabled
{
get
{
return editModeEnabled;
}
set
{
editModeEnabled = value;
}
}
/// <summary>
/// Gets or sets a value indicating whether the item should be aggregated.
/// </summary>
[Browsable(true)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public bool AggregateColumn
{
get
{
return aggregateColumn;
}
set
{
aggregateColumn = value;
}
}
/// <summary>
/// Gets or sets the aggregate key.
/// </summary>
[Browsable(true)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public string AggregateKey
{
get
{
return aggregateKey;
}
set
{
aggregateKey = value;
}
}
#endregion
}
#endregion
#region schedule column collection
[PersistChildren(true)]
public sealed class ScheduleGridColumnCollection : ICollection
{
#region member variables
private ArrayList ItemArray;
private string columnGroupTitle;
#endregion
#region constructors
public ScheduleGridColumnCollection(ArrayList items)
{
ItemArray = items;
}
#endregion
#region methods
/// <summary>
/// Finds the column corresponding to the data field.
/// </summary>
/// <param name="DataFieldName"></param>
/// <returns></returns>
public ScheduleGridColumn FindColumnDataField(string dataFieldName)
{
ScheduleGridColumn column = new ScheduleGridColumn();
foreach (ScheduleGridColumn item in ItemArray.Cast<ScheduleGridColumn>())
{
if (item.DataField == dataFieldName)
{
column = item;
break;
}
}
return column;
}
public bool ContainsColumnWithDataField(string dataFieldName)
{
foreach (ScheduleGridColumn item in ItemArray.Cast<ScheduleGridColumn>())
if (item.DataField == dataFieldName)
return true;
return false;
}
/// <summary>
/// Adds an item to the collection.
/// </summary>
/// <param name="item"></param>
public void Add(ScheduleGridColumn item)
{
ItemArray.Add(item);
}
public void AddRange(ScheduleGridColumnCollection itemCollection)
{
foreach (ScheduleGridColumn item in itemCollection)
ItemArray.Add(item);
}
/// <summary>
/// Clears all items from the collection.
/// </summary>
public void Clear()
{
ItemArray.Clear();
}
/// <summary>
/// Returns the enumerated equivalent of the collection.
/// </summary>
/// <returns></returns>
public IEnumerator GetEnumerator()
{
return ItemArray.GetEnumerator();
}
/// <summary>
/// Copies the collection to the array parameter.
/// </summary>
/// <param name="array"></param>
/// <param name="index"></param>
public void CopyTo(Array array, int index)
{
ItemArray.CopyTo(array, index);
}
#endregion
#region properties
/// <summary>
/// Gets the schedule column located at the specified index.
/// </summary>
/// <param name="index"></param>
/// <returns></returns>
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public ScheduleGridColumn this[int index]
{
get
{
return (ScheduleGridColumn)ItemArray[index];
}
}
/// <summary>
/// Gets a schedule column from the collection based on a unique name.
/// </summary>
/// <param name="uniqueName"></param>
/// <returns></returns>
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public ScheduleGridColumn this[string uniqueName]
{
get
{
ScheduleGridColumn dataColumn = null;
foreach (object item in ItemArray)
if (((ScheduleGridColumn)item).UniqueName == uniqueName)
dataColumn = (ScheduleGridColumn)item;
return dataColumn;
}
}
/// <summary>
/// Gets the total number of items in the collection.
/// </summary>
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public int Count
{
get
{
return ItemArray.Count;
}
}
/// <summary>
/// Gets a value indicating whether the collection is read only.
/// </summary>
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public bool IsReadOnly
{
get
{
return false;
}
}
/// <summary>
/// Gets a value indicating whether the collection is synchronized.
/// </summary>
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public bool IsSynchronized
{
get
{
return false;
}
}
/// <summary>
/// Gets the sync root object.
/// </summary>
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public object SyncRoot
{
get
{
return this;
}
}
/// <summary>
/// Gets or sets the column group title.
/// </summary>
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
[Browsable(true)]
public string ColumnGroupTitle
{
get
{
return columnGroupTitle;
}
set
{
columnGroupTitle = value;
}
}
#endregion
}
#endregion
#区域明细表列集合
[儿童(对)]
公共密封类ScheduleGridColumnCollection:ICollection
{
#区域成员变量
私有数组列表项数组;
私有字符串columnGroupTitle;
#端区
#区域构造函数
公共ScheduleGridColumnCollection(ArrayList项)
{
项目数组