本文整理汇总了VB.NET中System.Web.UI.WebControls.Adapters.DataBoundControlAdapter类的典型用法代码示例。如果您正苦于以下问题：VB.NET DataBoundControlAdapter类的具体用法？VB.NET DataBoundControlAdapter怎么用？VB.NET DataBoundControlAdapter使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了DataBoundControlAdapter类的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的VB.NET代码示例。
示例1: RenderContents
' 导入命名空间
Imports System.Data
Imports System.Web
Imports System.Web.UI
Imports System.Collections
Imports System.Security
Imports System.Security.Permissions
Namespace MyControls
' MyDataBound control is a simple read-only grid control.
<AspNetHostingPermission(SecurityAction.Demand, _
Level:=AspNetHostingPermissionLevel.Minimal)> _
<AspNetHostingPermission(SecurityAction.InheritanceDemand, _
Level:=AspNetHostingPermissionLevel.Minimal)> _
Public Class MyDataBound
Inherits System.Web.UI.WebControls.DataBoundControl
' This is an enumerator for the data source.
Private dataSourceEnumerator As IEnumerator = Nothing
' Render the data source as a table, without row and column headers.
Protected Overrides Sub RenderContents( _
ByVal writer As System.Web.UI.HtmlTextWriter)
' Render the <table> tag.
writer.RenderBeginTag(HtmlTextWriterTag.Table)
' Render the table rows.
While dataSourceEnumerator.MoveNext()
' Get the next data row as an object array.
Dim dataArray As Object() = CType( _
dataSourceEnumerator.Current, DataRowView).Row.ItemArray
' Render the <tr> tag.
writer.RenderBeginTag(HtmlTextWriterTag.Tr)
' Render the fields of the row.
Dim col As Integer
For col = 0 To (dataArray.GetLength(0)) - 1
'Render the <td> tag, the field data and the </td> tag.
writer.RenderBeginTag(HtmlTextWriterTag.Td)
writer.Write(dataArray(col))
writer.RenderEndTag()
Next col
' Render the </tr> tag.
writer.RenderEndTag()
End While
' Render the </table> tag.
writer.RenderEndTag()
End Sub
' Data binding consists of saving an enumerator for the data.
Protected Overrides Sub PerformDataBinding(ByVal data As IEnumerable)
dataSourceEnumerator = data.GetEnumerator()
End Sub
End Class
' MyDataBoundAdapter modifies a MyDataBound control to display a
' grid as a list with row separators.
<AspNetHostingPermission(SecurityAction.Demand, _
Level:=AspNetHostingPermissionLevel.Minimal)> _
<AspNetHostingPermission(SecurityAction.InheritanceDemand, _
Level:=AspNetHostingPermissionLevel.Minimal)> _
Public Class MyDataBoundAdapter
Inherits System.Web.UI.WebControls.Adapters.DataBoundControlAdapter
' Returns a strongly-typed reference to the MyDataBound control.
Public Shadows ReadOnly Property Control() As MyDataBound
Get
Return CType(MyBase.Control, MyDataBound)
End Get
End Property
' One-dimensional list for the grid data.
Private dataArray As New ArrayList()
' Copy grid data to one-dimensional list, add row separators.
Protected Overrides Sub PerformDataBinding(ByVal data As IEnumerable)
Dim dataSourceEnumerator As IEnumerator = data.GetEnumerator()
' Iterate through the table rows.
While dataSourceEnumerator.MoveNext()
' Add the next data row to the ArrayList.
dataArray.AddRange(CType(dataSourceEnumerator.Current, _
DataRowView).Row.ItemArray)
' Add a separator to the ArrayList.
dataArray.Add("----------")
End While
End Sub
' Render the data source as a one-dimensional list.
Protected Overrides Sub RenderContents( _
ByVal writer As System.Web.UI.HtmlTextWriter)
' Render the data list.
Dim col As Integer
For col = 0 To dataArray.Count - 1
writer.Write(dataArray(col))
writer.WriteBreak()
Next col
End Sub
End Class
End Namespace ' MyControls