GRIDVIEWコントロールaspを書き換える.net
13164 ワード
using System;
using System.Linq;
using System.Collections.Generic;
using System.Collections;
using System.ComponentModel;
using System.Drawing.Design;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace MattBerseth.WebControls
{
/// <summary>
///
/// </summary>
[ToolboxData("<{0}:GridView runat=server></{0}:GridView>")]
public class GridView : System.Web.UI.WebControls.GridView, IPageableItemContainer
{
/// <summary>
/// TotalRowCountAvailable event key
/// </summary>
private static readonly object EventTotalRowCountAvailable = new object();
/// <summary>
///
/// </summary>
/// <param name="dataSource"></param>
/// <param name="dataBinding"></param>
/// <returns></returns>
protected override int CreateChildControls(IEnumerable dataSource, bool dataBinding)
{
int rows = base.CreateChildControls(dataSource, dataBinding);
// if the paging feature is enabled, determine
// the total number of rows in the datasource
if (this.AllowPaging)
{
// if we are databinding, use the number of rows that were created,
// otherwise cast the datasource to an Collection and use that as the count
int totalRowCount = dataBinding ? rows : ((ICollection)dataSource).Count;
// raise the row count available event
IPageableItemContainer pageableItemContainer = this as IPageableItemContainer;
this.OnTotalRowCountAvailable(
new PageEventArgs(
pageableItemContainer.StartRowIndex,
pageableItemContainer.MaximumRows,
totalRowCount
)
);
// make sure the top and bottom pager rows are not visible
if (this.TopPagerRow != null)
{
this.TopPagerRow.Visible = false;
}
if (this.BottomPagerRow != null)
{
this.BottomPagerRow.Visible = false;
}
}
return rows;
}
#region IPageableItemContainer Interface
/// <summary>
///
/// </summary>
/// <param name="startRowIndex"></param>
/// <param name="maximumRows"></param>
/// <param name="databind"></param>
void IPageableItemContainer.SetPageProperties(
int startRowIndex, int maximumRows, bool databind)
{
int newPageIndex = (startRowIndex / maximumRows);
this.PageSize = maximumRows;
if (this.PageIndex != newPageIndex)
{
bool isCanceled = false;
if (databind)
{
// create the event args and raise the event
GridViewPageEventArgs args = new GridViewPageEventArgs(newPageIndex);
this.OnPageIndexChanging(args);
isCanceled = args.Cancel;
newPageIndex = args.NewPageIndex;
}
// if the event wasn't cancelled
// go ahead and change the paging values
if (!isCanceled)
{
this.PageIndex = newPageIndex;
if (databind)
{
this.OnPageIndexChanged(EventArgs.Empty);
}
}
if (databind)
{
this.RequiresDataBinding = true;
}
}
}
/// <summary>
///
/// </summary>
int IPageableItemContainer.StartRowIndex
{
get { return this.PageSize * this.PageIndex; }
}
/// <summary>
///
/// </summary>
int IPageableItemContainer.MaximumRows
{
get { return this.PageSize; }
}
/// <summary>
///
/// </summary>
event EventHandler<PageEventArgs> IPageableItemContainer.TotalRowCountAvailable
{
add { base.Events.AddHandler(GridView.EventTotalRowCountAvailable, value); }
remove { base.Events.RemoveHandler(GridView.EventTotalRowCountAvailable, value); }
}
/// <summary>
///
/// </summary>
/// <param name="e"></param>
protected virtual void OnTotalRowCountAvailable(PageEventArgs e)
{
EventHandler<PageEventArgs> handler = (EventHandler<PageEventArgs>)base.Events[GridView.EventTotalRowCountAvailable];
if (handler != null)
{
handler(this, e);
}
}
#endregion
}
}ASPX:
<%@ Page Language="C#" %>
<%@ Register Assembly="MattBerseth.WebControls" Namespace="MattBerseth.WebControls" TagPrefix="mb" %>
<!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">
<head runat="server">
<title>Untitled Page</title>
<link type="text/css" href="_assets/css/grid.css" rel="stylesheet" />
<link type="text/css" href="_assets/css/round.css" rel="stylesheet" />
<link type="text/css" href="_assets/css/core.css" rel="stylesheet" />
<script runat="server">
/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void RowDataBound(object sender, GridViewRowEventArgs args)
{
MattBerseth.WebControls.GridView gridView = (MattBerseth.WebControls.GridView)sender;
if (gridView.SortExpression.Length > 0)
{
int cellIndex = -1;
foreach (DataControlField field in gridView.Columns)
{
if (field.SortExpression == gridView.SortExpression)
{
cellIndex = gridView.Columns.IndexOf(field);
break;
}
}
if (cellIndex > -1)
{
if (args.Row.RowType == DataControlRowType.Header)
{
// this is a header row,
// set the sort style
args.Row.Cells[cellIndex].CssClass +=
(gridView.SortDirection == SortDirection.Ascending
? " sortasc" : " sortdesc");
}
}
}
}
</script>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="scriptManager" runat="server" />
<asp:ObjectDataSource ID="odsProducts" runat="server" SelectMethod="Select" TypeName="ProductsDataObject" />
<div>
<p style="font-weight:bold; font-family:Tahoma;">This is a GridView Plus a DataPager!</p>
<div class="grid">
<div class="rounded">
<div class="top-outer"><div class="top-inner"><div class="top">
<h2>Northwind Products</h2>
</div></div></div>
<div class="mid-outer"><div class="mid-inner"><div class="mid">
<asp:UpdatePanel ID="updPanel" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<mb:GridView
ID="gvProducts" runat="server" DataSourceID="odsProducts"
OnRowDataBound="RowDataBound" AutoGenerateColumns="false" AllowPaging="true" AllowSorting="true"
CssClass="datatable" CellPadding="0" CellSpacing="0" BorderWidth="0" GridLines="None"
>
<Columns>
<asp:BoundField
HeaderText="ID" DataField="ProductID" SortExpression="ProductID"
HeaderStyle-CssClass="first" ItemStyle-CssClass="first"
/>
<asp:BoundField HeaderText="Name" DataField="ProductName" SortExpression="ProductName" />
<asp:BoundField HeaderText="Quantity" DataField="QuantityPerUnit" SortExpression="QuantityPerUnit" />
<asp:BoundField HeaderText="Unit Price" DataField="UnitPrice" SortExpression="UnitPrice" DataFormatString="{0:c}" ItemStyle-CssClass="money" />
<asp:BoundField HeaderText="In Stock" DataField="UnitsInStock" SortExpression="UnitsInStock" />
<asp:BoundField HeaderText="On Order" DataField="UnitsOnOrder" SortExpression="UnitsOnOrder" />
</Columns>
<RowStyle CssClass="row" />
</mb:GridView>
<!-- Notice this is outside the GridView -->
<div class="pager">
<asp:DataPager ID="pager" runat="server" PageSize="8" PagedControlID="gvProducts">
<Fields>
<asp:NextPreviousPagerField
ButtonCssClass="command"
FirstPageText="«" PreviousPageText="‹"
RenderDisabledButtonsAsLabels="true"
ShowFirstPageButton="true" ShowPreviousPageButton="true"
ShowLastPageButton="false" ShowNextPageButton="false"
/>
<asp:NumericPagerField
ButtonCount="7" NumericButtonCssClass="command"
CurrentPageLabelCssClass="current" NextPreviousButtonCssClass="command"
/>
<asp:NextPreviousPagerField
ButtonCssClass="command"
LastPageText="»" NextPageText="›"
RenderDisabledButtonsAsLabels="true"
ShowFirstPageButton="false" ShowPreviousPageButton="false"
ShowLastPageButton="true" ShowNextPageButton="true"
/>
</Fields>
</asp:DataPager>
</div>
</ContentTemplate>
</asp:UpdatePanel>
</div></div></div>
<div class="bottom-outer"><div class="bottom-inner"><div class="bottom"></div></div></div>
</div>
</div>
</div>
</form>
</body>
</html>