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我有一个 div,它的属性集 runat="server" 及其 ID。我正在尝试将来自 MySQL 数据库的特定 div 的动态背景图像放在行中提到的路径 url 中。现在一切正常,但我不知道如何仅对特定 div 赋予样式影响。目前我只在 div 上定义,结果是在该页面上的所有 div 中获取背景图像。如何在我的代码中定义该 div 类或 ID?

Private Sub coverContent_Init(sender As Object, e As EventArgs) Handles coverContent.Init
        Try
            Dim css As New HtmlGenericControl()
            css.TagName = "style"
            css.Attributes.Add("type", "text/css")
            Dim imageURL As String = String.Empty
            Dim var3 As String
            var3 = Request.QueryString("hospitalID")

            Dim str As String = "Select hospitalID, coverImage from hospitals where hospitalID='" + var3 + "';"
            con.Open()
            Dim cmd As New MySqlCommand(str, con)
            Dim da As New MySqlDataAdapter(cmd)
            Dim dt As New DataTable
            da.Fill(dt)
            con.Close()
            If dt.Rows.Count > 0 Then
                generalID.Text = dt.Rows(0)("hospitalID").ToString
                imageURL = dt.Rows(0)("coverImage").ToString
            End If
            con.Close()
            css.InnerHtml = (Convert.ToString("div{background-image: url(") & imageURL) + ");}"

            Page.Header.Controls.Add(css)

            MyBase.OnInit(e)
        Catch ex As Exception
            Response.Write(ex)
        End Try
    End Sub
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1 回答 1

0

非常简单,您在其中提到了 div,您需要指定要显示背景图像的 div 类。像下面

css.InnerHtml = (Convert.ToString(".divClassName{background-image: url(") & imageURL) + ");}"
于 2016-05-08T05:26:44.830 回答