CssStyleCollection.Count Eigenschap
Definitie
Belangrijk
Bepaalde informatie heeft betrekking op een voorlopige productversie die aanzienlijk kan worden gewijzigd voordat deze wordt uitgebracht. Microsoft biedt geen enkele expliciete of impliciete garanties met betrekking tot de informatie die hier wordt verstrekt.
Hiermee haalt u het aantal items in het CssStyleCollection object op.
public:
property int Count { int get(); };public int Count { get; }member this.Count : intPublic ReadOnly Property Count As IntegerWaarde van eigenschap
Het aantal items in het CssStyleCollection object.
Voorbeelden
In het volgende voorbeeld wordt een CountStyleFunc-functie gemaakt waarmee de huidige waarde van de eigenschap Count voor een HtmlInputText-serverbesturingselement wordt opgehaald en deze wordt weergegeven op een ASP.NET pagina.
<%@ Page Language="C#" %>
<%@ Import Namespace="System.Data" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
CountStyleFunc(sender, e);
}
protected void CountStyleFunc(object sender, EventArgs e)
{
int styleCount;
// Get the StylesCollection Count.
styleCount = mytextBox.Style.Count;
Response.Write("<br /> CssStyleCollection Count " + styleCount);
}
protected void AddBtn_Click(Object Src, EventArgs e)
{
// Add style to textbox.
mytextBox.Style["background-color"] = "green";
CountStyleFunc(Src, e);
}
protected void ClearButton_Click(Object Src, EventArgs e)
{
mytextBox.Style.Clear();
CountStyleFunc(Src, e);
}
protected void RemoveButton_Click(Object Src, EventArgs e)
{
mytextBox.Style.Remove("background-color");
CountStyleFunc(Src, e);
}
protected void ShowButton_Click(Object Src, EventArgs e)
{
DataTable dt = new DataTable();
DataRow dr;
dt.Columns.Add(new DataColumn("AttributeName", typeof(String)));
dt.Columns.Add(new DataColumn("AttributeValue", typeof(String)));
// Get the styles collection.
foreach (object styleKey in mytextBox.Style.Keys)
{
dr = dt.NewRow();
dr[0] = (string)styleKey;
dr[1] = mytextBox.Style[(string)styleKey];
dt.Rows.Add(dr);
}
DataView dv = new DataView(dt);
DataList1.DataSource = dv;
DataList1.DataBind();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>CssStyleCollection Example</title>
</head>
<body>
<form id="CSSForm" runat="server">
<div>
<input type="text"
id="mytextBox"
style="color:black;font: 12pt arial;"
runat="server"
name="mytextBox"/>
<br /> <br />
<input type="Button"
id="addBtn"
value="AddStyle"
onserverclick="AddBtn_Click"
runat="server"
name="addBtn"/>
<input type="Button"
id="removeBtn"
value="RemoveStyle"
onserverclick="RemoveButton_Click"
runat="server"
name="removeBtn"/>
<input type="Button"
id="clearBtn"
value="ClearStyle"
onserverclick="ClearButton_Click"
runat="server"
name="clearBtn"/>
<input type="Button"
id="showBtn"
value="ShowAllStyles"
onserverclick="ShowButton_Click"
runat="server"
name="showBtn"/>
<asp:DataList id="DataList1"
runat="server">
<HeaderStyle Font-Bold="true"/>
<HeaderTemplate>
CssStyleCollection
</HeaderTemplate>
<ItemTemplate>
Attribute:
<%# DataBinder.Eval(Container.DataItem, "AttributeName") %>
,
Value:
<%# DataBinder.Eval(Container.DataItem, "AttributeValue") %>
</ItemTemplate>
</asp:DataList>
</div>
</form>
</body>
</html>
<%@ Page Language="VB" %>
<%@ Import Namespace="System.Data" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
If Not IsPostBack Then
CountStyleFunc(sender, e)
End If
End Sub
Protected Sub CountStyleFunc(ByVal sender As Object, ByVal e As EventArgs)
Dim styleCount As Integer
' Get the StylesCollection Count.
styleCount = mytextBox.Style.Count
Response.Write("<br /> CssStyleCollection Count " & styleCount)
End Sub
Protected Sub AddBtn_Click(ByVal Src As Object, ByVal e As EventArgs)
' Add style to textbox.
mytextBox.Style("background-color") = "green"
CountStyleFunc(Src, e)
End Sub
Protected Sub ClearButton_Click(ByVal Src As Object, ByVal e As EventArgs)
mytextBox.Style.Clear()
CountStyleFunc(Src, e)
End Sub
Protected Sub RemoveButton_Click(ByVal Src As Object, ByVal e As EventArgs)
mytextBox.Style.Remove("background-color")
CountStyleFunc(Src, e)
End Sub
Protected Sub ShowButton_Click(ByVal Src As Object, ByVal e As EventArgs)
Dim dt As New DataTable()
Dim dr As DataRow
dt.Columns.Add(New DataColumn("AttributeName", GetType(String)))
dt.Columns.Add(New DataColumn("AttributeValue", GetType(String)))
' Get the styles collection.
Dim styleKey As Object
For Each styleKey In mytextBox.Style.Keys
dr = dt.NewRow()
dr(0) = CStr(styleKey)
dr(1) = mytextBox.Style(CStr(styleKey))
dt.Rows.Add(dr)
Next styleKey
Dim dv As New DataView(dt)
DataList1.DataSource = dv
DataList1.DataBind()
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>CssStyleCollection Example</title>
</head>
<body>
<form id="CSSForm" runat="server">
<div>
<input type="text"
id="mytextBox"
style="color:black;font: 12pt arial;"
runat="server"
name="mytextBox"/>
<br /> <br />
<input type="Button"
id="addBtn"
value="AddStyle"
onserverclick="AddBtn_Click"
runat="server"
name="addBtn"/>
<input type="Button"
id="removeBtn"
value="RemoveStyle"
onserverclick="RemoveButton_Click"
runat="server"
name="removeBtn"/>
<input type="Button"
id="clearBtn"
value="ClearStyle"
onserverclick="ClearButton_Click"
runat="server"
name="clearBtn"/>
<input type="Button"
id="showBtn"
value="ShowAllStyles"
onserverclick="ShowButton_Click"
runat="server"
name="showBtn"/>
<asp:DataList id="DataList1"
runat="server">
<HeaderStyle Font-Bold="true"/>
<HeaderTemplate>
CssStyleCollection
</HeaderTemplate>
<ItemTemplate>
Attribute:
<%# DataBinder.Eval(Container.DataItem, "AttributeName") %>
,
Value:
<%# DataBinder.Eval(Container.DataItem, "AttributeValue") %>
</ItemTemplate>
</asp:DataList>
</div>
</form>
</body>
</html>
