---
title: "ASP.NET (VB) UC för png-halvtransparens."
type: "forum-thread"
url: "https://www.webforum.nu/amne/programmering/135891-asp-net-vb-uc-för-png-halvtransparens"
topic: "Programmering"
topic_url: "https://www.webforum.nu/amne/programmering"
author: "Travoni"
published: "2005-10-17T17:36:43.000Z"
updated: "2005-10-17T17:36:43.000Z"
replies: 0
views: 4236
page: 1
pages: 1
language: "sv-SE"
site: "webForum — webforum.nu"
rights: "Upphovsrätten till varje inlägg tillhör dess författare."
attribution: "Citera som: webForum, https://www.webforum.nu/amne/programmering/135891-asp-net-vb-uc-för-png-halvtransparens"
---

# ASP.NET (VB) UC för png-halvtransparens.

## #1 — Travoni, 2005-10-17T17:36Z

Eftersom att IE inte kan visa halvtransparenta png-bilder så skapade jag en liten work-around.
Tips på förbättringar/rättelser mottages varmt.

```
<%@ Control Language="VB" ClassName="pngControl" %>	 

<%@ Import Namespace="system" %>
<%@ Import Namespace="system.web.ui" %>

<script runat=server>
    
    Private strimageUrl, strStyle, strCssClass, strAlternateText, strHeight, strWidth, strImageAlign As String
    
    Protected Function GetBrowser() As String
        Dim br As System.Web.HttpBrowserCapabilities = Request.Browser
        Dim sBrowserName As String = UCase(br.Browser)
        Return sBrowserName.ToString()
    End Function

    'imageUrl
    Public WriteOnly Property imageUrl() As String
        Set(ByVal value As String)
            strimageUrl = value
        End Set
    End Property
    
    'style
    Public WriteOnly Property style() As String
        Set(ByVal value As String)
            If GetBrowser() = "IE" Then
                strStyle = value
            Else
                strStyle = " style=""" & value & """ "
            End If
        End Set
    End Property
    
    'CssClass
    Public WriteOnly Property CssClass() As String
        Set(ByVal value As String)
            strCssClass = " class=""" & value & """"
        End Set
    End Property
    
    'AlternateText
    Public WriteOnly Property AlternateText() As String
        Set(ByVal value As String)
            strAlternateText = value
        End Set
    End Property
    
    'Height
    Public WriteOnly Property Height() As String
        Set(ByVal value As String)
            If GetBrowser() = "IE" Then
                strHeight = "height:" & value & "px;"
            Else
                strHeight = " height=""" & value & """"
            End If
        End Set
    End Property
    
    'Width
    Public WriteOnly Property Width() As String
        Set(ByVal value As String)
            If GetBrowser() = "IE" Then
                strWidth = "width:" & value & "px;"
            Else
                strWidth = " width=""" & value & """"
            End If
        End Set
    End Property
    
    'ImageAlign
    Public WriteOnly Property ImageAlign() As String
        Set(ByVal value As String)
            If GetBrowser() = "IE" Then
                strImageAlign = "float:" & value & ";"
            Else
                strImageAlign = " align=""" & value & """"
            End If
        End Set
    End Property
    
    'OnInit
    Protected Overrides Sub OnInit(ByVal e As EventArgs)
        If Not Me.ID Is Nothing Then ID = "id=""" & Me.ID & """ "
        If GetBrowser() = "IE" Then
            pngImg.Text = "<span " & ID & strCssClass & "title=""" & strAlternateText & _
            """ style=""" & strStyle & strImageAlign & strWidth & strHeight & _
            "display:inline-block;filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" & strimageUrl & _
            "', sizingMethod='scale');""></span>"
        Else
            pngImg.Text = "<img " & ID & strCssClass & "src=""" & strimageUrl & _
            """" & strImageAlign & " alt=""" & strAlternateText & """" & strHeight & _
            """" & strWidth & strStyle & " title=""" & strAlternateText & """>"
        End If
    End Sub
    
</script>
<asp:Literal runat="server" id="pngImg"></asp:Literal>
```

RED. / Jag ser att WF bråkar med koden. Ta bort mellanrummet mellan AlphaImageLoa  der

Permalänk: https://www.webforum.nu/p/135891

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