我目前正在使用IPagedList来有效地分页我的数据。
使用GridView时,我可以在GridView.PageIndexChanging事件中设置页面索引并重新绑定网格。
问题是,GridView.PageCount属性是只读的,所以默认的寻呼机只显示1页。
我想我将不得不推出自己的GridView实现来解决这个问题?有人有他们已经做过的吗?
答案 0 :(得分:6)
由this post帮助我创建了自己的自定义GridView控件,允许我覆盖寻呼机的初始化并设置记录计数。
public class CustomGridView : GridView
{
private const string _virtualItemCount = "virtualItemCount";
private const string _currentPageIndex = "currentPageIndex";
[Browsable(true), Category("Custom")]
[Description("Set the virtual item count for this grid")]
public int VirtualItemCount {
get
{
if (ViewState[_virtualItemCount] == null)
ViewState[_virtualItemCount] = -1;
return Convert.ToInt32(ViewState[_virtualItemCount]);
}
set
{
ViewState[_virtualItemCount] = value;
}
}
private int CurrentPageIndex
{
get
{
if (ViewState[_currentPageIndex] == null)
ViewState[_currentPageIndex] = 0;
return Convert.ToInt32(ViewState[_currentPageIndex]);
}
set
{
ViewState[_currentPageIndex] = value;
}
}
public override object DataSource
{
get
{
return base.DataSource;
}
set
{
base.DataSource = value;
this.CurrentPageIndex = this.PageIndex;
}
}
protected override void InitializePager(GridViewRow row, int columnSpan, PagedDataSource pagedDataSource)
{
if (CustomPaging)
{
pagedDataSource.VirtualCount = this.VirtualItemCount;
pagedDataSource.CurrentPageIndex = this.CurrentPageIndex;
}
base.InitializePager(row, columnSpan, pagedDataSource);
}
public bool CustomPaging {
get { return (this.VirtualItemCount != -1); }
}
}
然后在CustomGridView.PageIndexChanging事件中,我们设置页面索引并重新加载我们的数据(将页面索引和页面大小传递给我们的存储库方法):
protected void gvAccounts_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
gvAccounts.PageIndex = e.NewPageIndex;
BindGrid(e.NewPageIndex, gvAccounts.PageSize);
}
protected void BindGrid(int pageIndex, int pageSize)
{
var accounts = AccountManager.GetAllAccounts<int>(pageIndex, pageSize, x=> x.AccountId);
gvAccounts.VirtualItemCount = accounts.TotalCount;
gvAccounts.DataSource = accounts;
gvAccounts.DataBind();
}
希望这有帮助。
答案 1 :(得分:1)
这是我在绑定到IQueryable时使用gridview完成分页和排序的过程:http://bradoyler.com/post/399042473/using-the-asp-net-gridview-with-objectdatasource-and
希望也有帮助!