RepeatLayout Výčet
Definice
Důležité
Některé informace platí pro předběžně vydaný produkt, který se může zásadně změnit, než ho výrobce nebo autor vydá. Microsoft neposkytuje žádné záruky, výslovné ani předpokládané, týkající se zde uváděných informací.
Určuje rozložení položek v ovládacím prvku seznamu.
public enum class RepeatLayout
public enum RepeatLayout
type RepeatLayout =
Public Enum RepeatLayout
- Dědičnost
Pole
Flow | 1 | Položky se zobrazují bez struktury tabulky. Vykreslené značky se skládají z elementu |
OrderedList | 3 | Položky se zobrazují bez struktury tabulky. Vykreslené značky se skládají z elementu |
Table | 0 | Položky se zobrazují v tabulce. |
UnorderedList | 2 | Položky se zobrazují bez struktury tabulky. Vykreslené značky se skládají z elementu |
Příklady
Následující příklad ukazuje ovládací prvek seznamu, jehož rozložení je definováno hodnotou výčtu Table
.
<%@ Page Language="C#" AutoEventWireup="True" %>
<%@ Import Namespace="System.Data" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<script runat="server">
ICollection CreateDataSource()
{
// Create sample data for the DataList control.
DataTable dt = new DataTable();
DataRow dr;
// Define the columns of the table.
dt.Columns.Add(new DataColumn("IntegerValue", typeof(Int32)));
dt.Columns.Add(new DataColumn("StringValue", typeof(String)));
dt.Columns.Add(new DataColumn("CurrencyValue", typeof(double)));
dt.Columns.Add(new DataColumn("ImageValue", typeof(String)));
// Populate the table with sample values.
for (int i = 0; i < 9; i++)
{
dr = dt.NewRow();
dr[0] = i;
dr[1] = "Description for item " + i.ToString();
dr[2] = 1.23 * (i + 1);
dr[3] = "Image" + i.ToString() + ".jpg";
dt.Rows.Add(dr);
}
DataView dv = new DataView(dt);
return dv;
}
void Page_Load(Object sender, EventArgs e)
{
// Load sample data only once, when the page is first loaded.
if (!IsPostBack)
{
ItemsList.DataSource = CreateDataSource();
ItemsList.DataBind();
}
}
void Button_Click(Object sender, EventArgs e)
{
// Set the repeat direction based on the selected value of the
// DirectionList DropDownList control.
ItemsList.RepeatDirection =
(RepeatDirection)DirectionList.SelectedIndex;
// Set the repeat layout based on the selected value of the
// LayoutList DropDownList control.
ItemsList.RepeatLayout = (RepeatLayout)LayoutList.SelectedIndex;
// Set the number of columns to display based on the selected
// value of the ColumnsList DropDownList control.
ItemsList.RepeatColumns = ColumnsList.SelectedIndex;
// Show or hide the gridlines based on the value of the
// ShowBorderCheckBox property. Note that gridlines are displayed
// only if the RepeatLayout property is set to Table.
if ((ShowBorderCheckBox.Checked)
&& (ItemsList.RepeatLayout == RepeatLayout.Table))
{
ItemsList.BorderWidth = Unit.Pixel(1);
ItemsList.GridLines = GridLines.Both;
}
else
{
ItemsList.BorderWidth = Unit.Pixel(0);
ItemsList.GridLines = GridLines.None;
}
}
</script>
<head runat="server">
<title>DataList Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>DataList Example</h3>
<asp:DataList id="ItemsList"
BorderColor="black"
CellPadding="5"
CellSpacing="5"
RepeatDirection="Vertical"
RepeatLayout="Table"
RepeatColumns="0"
BorderWidth="0"
runat="server">
<HeaderStyle BackColor="#aaaadd">
</HeaderStyle>
<AlternatingItemStyle BackColor="Gainsboro">
</AlternatingItemStyle>
<HeaderTemplate>
List of items
</HeaderTemplate>
<ItemTemplate>
Description: <br />
<%# DataBinder.Eval(Container.DataItem, "StringValue") %>
<br />
Price: <%# DataBinder.Eval(Container.DataItem, "CurrencyValue", "{0:c}") %>
<br />
<asp:Image id="ProductImage"
AlternatingText='<%# DataBinder.Eval(Container.DataItem, "StringValue") %>'
ImageUrl='<%# DataBinder.Eval(Container.DataItem, "ImageValue") %>'
runat="server"/>
</ItemTemplate>
</asp:DataList>
<hr />
<table cellpadding="5">
<tr>
<th>
Repeat direction:
</th>
<th>
Repeat layout:
</th>
<th>
Repeat columns:
</th>
<th>
<asp:CheckBox id="ShowBorderCheckBox"
Text="Show border"
Checked="False"
runat="server" />
</th>
</tr>
<tr>
<td>
<asp:DropDownList id="DirectionList"
runat="server">
<asp:ListItem>Horizontal</asp:ListItem>
<asp:ListItem Selected="True">Vertical</asp:ListItem>
</asp:DropDownList>
</td>
<td>
<asp:DropDownList id="LayoutList"
runat="server">
<asp:ListItem Selected="True">Table</asp:ListItem>
<asp:ListItem>Flow</asp:ListItem>
</asp:DropDownList>
</td>
<td>
<asp:DropDownList id="ColumnsList"
runat="server">
<asp:ListItem Selected="True">0</asp:ListItem>
<asp:ListItem>1</asp:ListItem>
<asp:ListItem>2</asp:ListItem>
<asp:ListItem>3</asp:ListItem>
<asp:ListItem>4</asp:ListItem>
<asp:ListItem>5</asp:ListItem>
</asp:DropDownList>
</td>
<td>
</td>
</tr>
</table>
<asp:LinkButton id="RefreshButton"
Text="Refresh DataList"
OnClick="Button_Click"
runat="server"/>
</form>
</body>
</html>
<%@ Page Language="VB" AutoEventWireup="True" %>
<%@ Import Namespace="System.Data" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<script runat="server">
Function CreateDataSource() As ICollection
' Create sample data for the DataList control.
Dim dt As DataTable = New DataTable()
dim dr As DataRow
' Define the columns of the table.
dt.Columns.Add(New DataColumn("IntegerValue", GetType(Int32)))
dt.Columns.Add(New DataColumn("StringValue", GetType(String)))
dt.Columns.Add(New DataColumn("CurrencyValue", GetType(Double)))
dt.Columns.Add(New DataColumn("ImageValue", GetType(String)))
' Populate the table with sample values.
Dim i As Integer
For i = 0 To 8
dr = dt.NewRow()
dr(0) = i
dr(1) = "Description for item " & i.ToString()
dr(2) = 1.23 * (i + 1)
dr(3) = "Image" & i.ToString() & ".jpg"
dt.Rows.Add(dr)
Next i
Dim dv As DataView = New DataView(dt)
Return dv
End Function
Sub Page_Load(sender As Object, e As EventArgs)
' Load sample data only once, when the page is first loaded.
If Not IsPostBack Then
ItemsList.DataSource = CreateDataSource()
ItemsList.DataBind()
End If
End Sub
Sub Button_Click(sender As Object, e As EventArgs)
' Set the repeat direction based on the selected value of the
' DirectionList DropDownList control.
ItemsList.RepeatDirection = _
CType(DirectionList.SelectedIndex, RepeatDirection)
' Set the repeat layout based on the selected value of the
' LayoutList DropDownList control.
ItemsList.RepeatLayout = CType(LayoutList.SelectedIndex, RepeatLayout)
' Set the number of columns to display based on the selected
' value of the ColumnsList DropDownList control.
ItemsList.RepeatColumns = ColumnsList.SelectedIndex
' Show or hide the gridlines based on the value of the
' ShowBorderCheckBox. Note that gridlines are displayed
' only if the RepeatLayout property is set to Table.
If ShowBorderCheckBox.Checked _
And ItemsList.RepeatLayout = RepeatLayout.Table Then
ItemsList.BorderWidth = Unit.Pixel(1)
ItemsList.GridLines = GridLines.Both
Else
ItemsList.BorderWidth = Unit.Pixel(0)
ItemsList.GridLines = GridLines.None
End If
End Sub
</script>
<head runat="server">
<title>DataList Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>DataList Example</h3>
<asp:DataList id="ItemsList"
BorderColor="black"
CellPadding="5"
CellSpacing="5"
RepeatDirection="Vertical"
RepeatLayout="Table"
RepeatColumns="0"
BorderWidth="0"
runat="server">
<HeaderStyle BackColor="#aaaadd">
</HeaderStyle>
<AlternatingItemStyle BackColor="Gainsboro">
</AlternatingItemStyle>
<HeaderTemplate>
List of items
</HeaderTemplate>
<ItemTemplate>
Description: <br />
<%# DataBinder.Eval(Container.DataItem, "StringValue") %>
<br />
Price: <%# DataBinder.Eval(Container.DataItem, "CurrencyValue", "{0:c}") %>
<br />
<asp:Image id="ProductImage"
AlternatingText='<%# DataBinder.Eval(Container.DataItem, "StringValue") %>'
ImageUrl='<%# DataBinder.Eval(Container.DataItem, "ImageValue") %>'
runat="server"/>
</ItemTemplate>
</asp:DataList>
<hr />
<table cellpadding="5">
<tr>
<th>
Repeat direction:
</th>
<th>
Repeat layout:
</th>
<th>
Repeat columns:
</th>
<th>
<asp:CheckBox id="ShowBorderCheckBox"
Text="Show border"
Checked="False"
runat="server" />
</th>
</tr>
<tr>
<td>
<asp:DropDownList id="DirectionList"
runat="server">
<asp:ListItem>Horizontal</asp:ListItem>
<asp:ListItem Selected="True">Vertical</asp:ListItem>
</asp:DropDownList>
</td>
<td>
<asp:DropDownList id="LayoutList"
runat="server">
<asp:ListItem Selected="True">Table</asp:ListItem>
<asp:ListItem>Flow</asp:ListItem>
</asp:DropDownList>
</td>
<td>
<asp:DropDownList id="ColumnsList"
runat="server">
<asp:ListItem Selected="True">0</asp:ListItem>
<asp:ListItem>1</asp:ListItem>
<asp:ListItem>2</asp:ListItem>
<asp:ListItem>3</asp:ListItem>
<asp:ListItem>4</asp:ListItem>
<asp:ListItem>5</asp:ListItem>
</asp:DropDownList>
</td>
<td>
</td>
</tr>
</table>
<asp:LinkButton id="RefreshButton"
Text="Refresh DataList"
OnClick="Button_Click"
runat="server"/>
</form>
</body>
</html>
Následující příklad ukazuje značky vykreslené pro ovládací prvek CheckBoxList , jehož RepeatLayout vlastnost je nastavena na Flow
.
<span id="ctl00_MainContent_CheckBoxList1">
<input id="ctl00_MainContent_CheckBoxList1_0" type="checkbox"
name="ctl00$MainContent$CheckBoxList1$0" value="Item 1" />
<label for="ctl00_MainContent_CheckBoxList1_0">Item 1</label>
<br />
<input id="ctl00_MainContent_CheckBoxList1_1" type="checkbox"
name="ctl00$MainContent$CheckBoxList1$1" value="Item 2"/>
<label for="ctl00_MainContent_CheckBoxList1_1">Item 2</label>
<br />
<input id="ctl00_MainContent_CheckBoxList1_2" type="checkbox"
name="ctl00$MainContent$CheckBoxList1$2" value="Item 2" />
<label for="ctl00_MainContent_CheckBoxList1_2">Item 2</label>
</span>
Následující příklad ukazuje značky vykreslené pro ovládací prvek CheckBoxList , jehož RepeatLayout vlastnost je nastavena na OrderedList
.
<ol id="ctl00_MainContent_CheckBoxList3">
<li>
<input id="ctl00_MainContent_CheckBoxList3_0" type="checkbox"
name="ctl00$MainContent$CheckBoxList3$0" value="Item 1" />
<label for="ctl00_MainContent_CheckBoxList3_0">Item 1</label>
</li>
<li>
<input id="ctl00_MainContent_CheckBoxList3_1" type="checkbox"
name="ctl00$MainContent$CheckBoxList3$1" value="Item 2" />
<label for="ctl00_MainContent_CheckBoxList3_1">Item 2</label>
</li>
<li>
<input id="ctl00_MainContent_CheckBoxList3_2" type="checkbox"
name="ctl00$MainContent$CheckBoxList3$2" value="Item 2" />
<label for="ctl00_MainContent_CheckBoxList3_2">Item 2</label>
</li>
</ol>
Následující příklad ukazuje značky vykreslené pro ovládací prvek CheckBoxList , jehož RepeatLayout vlastnost je nastavena na Table
.
<table id="ctl00_MainContent_CheckBoxList2">
<tr>
<td>
<input id="ctl00_MainContent_CheckBoxList2_0" type="checkbox"
name="ctl00$MainContent$CheckBoxList2$0" value="Item 1" />
<label for="ctl00_MainContent_CheckBoxList2_0">Item 1</label>
</td>
</tr>
<tr>
<td>
<input id="ctl00_MainContent_CheckBoxList2_1" type="checkbox"
name="ctl00$MainContent$CheckBoxList2$1" value="Item 2" />
<label for="ctl00_MainContent_CheckBoxList2_1">Item 2</label>
</td>
</tr>
<tr>
<td>
<input id="ctl00_MainContent_CheckBoxList2_2" type="checkbox"
name="ctl00$MainContent$CheckBoxList2$2" value="Item 3" />
<label for="ctl00_MainContent_CheckBoxList2_2">Item 3</label>
</td>
</tr>
</table>
Následující příklad ukazuje značky vykreslené pro ovládací prvek CheckBoxList , jehož RepeatLayout vlastnost je nastavena na UnorderedList
.
<ul id="ctl00_MainContent_CheckBoxList4">
<li>
<input id="ctl00_MainContent_CheckBoxList4_0" type="checkbox"
name="ctl00$MainContent$CheckBoxList4$0" value="Item 1" />
<label for="ctl00_MainContent_CheckBoxList4_0">Item 1</label>
</li>
<li>
<input id="ctl00_MainContent_CheckBoxList4_1" type="checkbox"
name="ctl00$MainContent$CheckBoxList4$1" value="Item 2" />
<label for="ctl00_MainContent_CheckBoxList4_1">Item 2</label>
</li>
<li>
<input id="ctl00_MainContent_CheckBoxList4_2" type="checkbox"
name="ctl00$MainContent$CheckBoxList4$2" value="Item 2" />
<label for="ctl00_MainContent_CheckBoxList4_2">Item 2</label>
</li>
</ul>
Poznámky
Výčet RepeatLayout představuje různé možnosti rozložení pro ovládací prvek seznamu.