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是否将CalendarExtender动态添加到文本框子类服务器控件?

custom-server-controls calendar textbox asp.net-ajax asp.net

2

LockeCJ · 技术社区 · 17 年前

我正在尝试创建一个从文本框继承的服务器控件,该控件将自动具有 CalendarExtender 附属于它。可以这样做吗,还是我的新控件需要从CompositeControl继承?我已经尝试过前者,但我不清楚在控制生命周期的哪个部分我应该创建CalendarExtender的新实例,以及我应该将它添加到哪些控制集合中。我似乎无法将其添加到页面或窗体的控件集合中,如果将其添加到(文本框)控件的集合中,则无法获得任何弹出日历功能。

4 回复 | 直到 17 年前

1

2

Joseph Daigle Sarabpreet Singh Anand 17 年前

CreateChildControls

TextBox textbox = new TextBox();
textbox.ID = this.ID + "Textbox";
textbox.Text = this.EditableField.TextValue;
textbox.TextChanged += new EventHandler(HandleTextboxTextChanged);
textbox.Width = new Unit(100, UnitType.Pixel);
CalendarExtender calExender = new CalendarExtender();
calExender.PopupButtonID = "Image1";
calExender.TargetControlID = textbox.ID;
this.Controls.Add(textbox);
this.Controls.Add(calExender);

2

1

spot 16 年前

Imports System.Web.UI.WebControls
Imports AjaxControlToolkit

Public Class DateTextBox
    Inherits TextBox

    Private _dateValidator As CompareValidator
    Private _calendarExtender As CalendarExtender

    Protected Overrides Sub OnInit(ByVal e As System.EventArgs)
        MyBase.OnInit(e)

        _dateValidator = New CompareValidator
        With _dateValidator
            .ControlToValidate = ID
            Rem set your other properties
        End With
        Controls.Add(_dateValidator)

        _calendarExtender = New CalendarExtender
        With _calendarExtender
            .TargetControlID = ID
        End With
        Controls.Add(_calendarExtender)
    End Sub

    Protected Overrides Sub Render(ByVal writer As System.Web.UI.HtmlTextWriter)
        MyBase.Render(writer)
        _dateValidator.RenderControl(writer)
        _calendarExtender.RenderControl(writer)
    End Sub
End Class

3

1

Vikram chouhan 14 年前

4

0

Ranadheer Reddy 14 年前