void CreateNextPrevPager(TableRow row, PagedDataSourceEx pagedDataSource, bool addFirstLastPageButtons)
{
PagerSettingsEx pagerSettings = this.PagerSettings;
string previousPageImageUrl = pagerSettings.PreviousPageImageUrl;
string nextPageImageUrl = pagerSettings.NextPageImageUrl;
bool isFirstPage = pagedDataSource.IsFirstPage;
bool isLastPage = pagedDataSource.IsLastPage;
#region 第一页
if (addFirstLastPageButtons && !isFirstPage)
{
IButtonControl control = null;
TableCell cell = new TableCell();
row.Cells.Add(cell);
string firstPageImageUrl = pagerSettings.FirstPageImageUrl;
if (!string.IsNullOrEmpty(firstPageImageUrl))
{
control = new DataControlImageButton(this);
((DataControlImageButton)control).ImageUrl = firstPageImageUrl;
((DataControlImageButton)control).AlternateText = HttpUtility.HtmlDecode(pagerSettings.FirstPageText);
((DataControlImageButton)control).ToolTip = "第一页";
((DataControlImageButton)control).EnableCallback(this.BuildCallbackArgument(0));
}
else
{
control = new DataControlPagerLinkButton(this);
((DataControlPagerLinkButton)control).Text = pagerSettings.FirstPageText;
((DataControlPagerLinkButton)control).ToolTip = "第一页";
((DataControlPagerLinkButton)control).EnableCallback(this.BuildCallbackArgument(0));
}
control.CommandName = "Page";
control.CommandArgument = "First";
cell.Controls.Add((Control)control);
}
#endregion
#region 上一页
if (!isFirstPage)
{
IButtonControl control = null;
TableCell cell = new TableCell();
row.Cells.Add(cell);
if (!string.IsNullOrEmpty(previousPageImageUrl))
{
control = new DataControlImageButton(this);
((DataControlImageButton)control).ImageUrl = previousPageImageUrl;
((DataControlImageButton)control).AlternateText = HttpUtility.HtmlDecode(pagerSettings.PreviousPageText);
((DataControlImageButton)control).ToolTip = "上一页";
((DataControlImageButton)control).EnableCallback(this.BuildCallbackArgument(this.PageIndex - 1));
}
else
{
control = new DataControlPagerLinkButton(this);
((DataControlPagerLinkButton)control).Text = pagerSettings.PreviousPageText;
((DataControlPagerLinkButton)control).ToolTip = "上一页";
((DataControlPagerLinkButton)control).EnableCallback(this.BuildCallbackArgument(this.PageIndex - 1));
}
control.CommandName = "Page";
control.CommandArgument = "Prev";
cell.Controls.Add((Control)control);
}
#endregion
#region 下一页
if (!isLastPage)
{
IButtonControl control = null;
TableCell cell = new TableCell();
row.Cells.Add(cell);
if (!string.IsNullOrEmpty(nextPageImageUrl))
{
control = new DataControlImageButton(this);
((DataControlImageButton)control).ImageUrl = nextPageImageUrl;
((DataControlImageButton)control).AlternateText = HttpUtility.HtmlDecode(pagerSettings.NextPageText);
((DataControlImageButton)control).ToolTip = "下一页";
((DataControlImageButton)control).EnableCallback(this.BuildCallbackArgument(this.PageIndex + 1));
}
else
{
control = new DataControlPagerLinkButton(this);
((DataControlPagerLinkButton)control).Text = pagerSettings.NextPageText;
((DataControlPagerLinkButton)control).ToolTip = "下一页";
((DataControlPagerLinkButton)control).EnableCallback(this.BuildCallbackArgument(this.PageIndex + 1));
}
control.CommandName = "Page";
control.CommandArgument = "Next";
cell.Controls.Add((Control)control);
}
#endregion
#region 最后页
if (addFirstLastPageButtons && !isLastPage)
{
IButtonControl control = null;
TableCell cell = new TableCell();
row.Cells.Add(cell);
string lastPageImageUrl = pagerSettings.LastPageImageUrl;
if (!string.IsNullOrEmpty(lastPageImageUrl))
{
control = new DataControlImageButton(this);
((DataControlImageButton)control).ImageUrl = lastPageImageUrl;
((DataControlImageButton)control).AlternateText = HttpUtility.HtmlDecode(pagerSettings.LastPageText);
((DataControlImageButton)control).ToolTip = "最后页";
((DataControlImageButton)control).EnableCallback(this.BuildCallbackArgument(pagedDataSource.PageCount - 1));
}
else
{
control = new DataControlPagerLinkButton(this);
((DataControlPagerLinkButton)control).Text = pagerSettings.LastPageText;
((DataControlPagerLinkButton)control).ToolTip = "最后页";
((DataControlPagerLinkButton)control).EnableCallback(this.BuildCallbackArgument(pagedDataSource.PageCount - 1));
}
control.CommandName = "Page";
control.CommandArgument = "Last";
cell.Controls.Add((Control)control);
}
#endregion
}
void CreateNumericPager(TableRow row, PagedDataSourceEx pagedDataSource, bool addFirstLastPageButtons)
{
LinkButton button = null;
PagerSettingsEx pagerSettings = this.PagerSettings;
int pageCount = pagedDataSource.PageCount;
int nextPageIndex = pagedDataSource.CurrentPageIndex + 1;
int pageButtonCount = pagerSettings.PageButtonCount;
int firstDisplayPageIndex = this.FirstDisplayPageIndex + 1;
int pageIndex = (pageCount < pageButtonCount) ? pageCount : pageButtonCount;
int startIndex = 1;
if (nextPageIndex > pageIndex)
{
if (firstDisplayPageIndex > 0 && ((nextPageIndex - firstDisplayPageIndex >= 0) && (nextPageIndex - firstDisplayPageIndex < pageButtonCount)))
startIndex = firstDisplayPageIndex;
else
startIndex = (pagedDataSource.CurrentPageIndex / pageButtonCount) + 1;
pageIndex = startIndex + pageButtonCount - 1;
if (pageIndex > pageCount)
pageIndex = pageCount;
if ((pageIndex - startIndex) + 1 < pageButtonCount)
startIndex = Math.Max(1, (pageIndex - pageButtonCount + 1));
this.FirstDisplayPageIndex = startIndex - 1;
}
#region 首页
if (addFirstLastPageButtons && (nextPageIndex != 1) && (startIndex != 1))
{
IButtonControl control = null;
TableCell cell = new TableCell();
row.Cells.Add(cell);
string firstPageImageUrl = pagerSettings.FirstPageImageUrl;
if (!string.IsNullOrEmpty(firstPageImageUrl))
{
control = new DataControlImageButton(this);
((DataControlImageButton)control).ImageUrl = firstPageImageUrl;
((DataControlImageButton)control).AlternateText = HttpUtility.HtmlDecode(pagerSettings.FirstPageText);
((DataControlImageButton)control).ToolTip = "第一页";
((DataControlImageButton)control).EnableCallback(this.BuildCallbackArgument(0));
}
else
{
control = new DataControlPagerLinkButton(this);
((DataControlPagerLinkButton)control).Text = pagerSettings.FirstPageText;
((DataControlPagerLinkButton)control).ToolTip = "第一页";
((DataControlPagerLinkButton)control).EnableCallback(this.BuildCallbackArgument(0));
}
control.CommandName = "Page";
control.CommandArgument = "First";
cell.Controls.Add((Control)control);
}
#endregion
#region 前更多
if (startIndex != 1)
{
TableCell cell = new TableCell();
row.Cells.Add(cell);
button = new DataControlPagerLinkButton(this);
button.Text = "...";
button.ToolTip = "更多...";
button.CommandName = "Page";
button.CommandArgument = (startIndex - 1).ToString(NumberFormatInfo.InvariantInfo);
((DataControlPagerLinkButton)button).EnableCallback(this.BuildCallbackArgument(startIndex - 2));
cell.Controls.Add(button);
}
#endregion
#region 页索引
for (int i = startIndex; i <= pageIndex; i++)
{
TableCell cell = new TableCell();
row.Cells.Add(cell);
string str = i.ToString(NumberFormatInfo.InvariantInfo);
if (i == nextPageIndex)
{
Label child = new Label();
child.Text = str;
cell.Controls.Add(child);
}
else
{
button = new DataControlPagerLinkButton(this);
button.Text = str;
button.ToolTip = str;
button.CommandName = "Page";
button.CommandArgument = str;
((DataControlPagerLinkButton)button).EnableCallback(this.BuildCallbackArgument(i - 1));
cell.Controls.Add(button);
}
}
#endregion
#region 后更多
if (pageCount > pageIndex)
{
TableCell cell = new TableCell();
row.Cells.Add(cell);
button = new DataControlPagerLinkButton(this);
button.Text = "...";
button.ToolTip = "更多...";
button.CommandName = "Page";
button.CommandArgument = (pageIndex + 1).ToString(NumberFormatInfo.InvariantInfo);
((DataControlPagerLinkButton)button).EnableCallback(this.BuildCallbackArgument(pageIndex));
cell.Controls.Add(button);
}
#endregion
#region 末页
if (addFirstLastPageButtons && (nextPageIndex != pageCount) && (pageIndex != pageCount))
{
IButtonControl control = null;
TableCell cell = new TableCell();
row.Cells.Add(cell);
string lastPageImageUrl = pagerSettings.LastPageImageUrl;
if (!string.IsNullOrEmpty(lastPageImageUrl))
{
control = new DataControlImageButton(this);
((DataControlImageButton)control).ImageUrl = lastPageImageUrl;
((DataControlImageButton)control).AlternateText = HttpUtility.HtmlDecode(pagerSettings.LastPageText);
((DataControlImageButton)control).ToolTip = "最后页";
((DataControlImageButton)control).EnableCallback(this.BuildCallbackArgument(pagedDataSource.PageCount - 1));
}
else
{
control = new DataControlPagerLinkButton(this);
((DataControlPagerLinkButton)control).Text = pagerSettings.LastPageText;
((DataControlPagerLinkButton)control).ToolTip = "最后页";
((DataControlPagerLinkButton)control).EnableCallback(this.BuildCallbackArgument(pagedDataSource.PageCount - 1));
}
control.CommandName = "Page";
control.CommandArgument = "Last";
cell.Controls.Add((Control)control);
}
#endregion
}
/// <summary>
/// 初始化在分页功能启用时显示的页导航行。
/// </summary>
/// <param name="row">表示要初始化的页导航行。</param>
/// <param name="columnSpan">页导航行应跨越的列数。</param>
/// <param name="pagedDataSource">数据源。</param>
protected virtual void InitializePager(DataGridViewRow row, int columnSpan, PagedDataSourceEx pagedDataSource)
{
TableCell cell = new TableCell();
if (columnSpan > 1)
cell.ColumnSpan = columnSpan;
PagerSettingsEx pagerSettings = this.PagerSettings;
Panel panel = new Panel();
panel.CssClass = this.PagingDataCss;
Table child = new Table();
child.CellPadding = 0;
child.CellSpacing = 0;
child.BorderWidth = 0;
TableRow tr = new TableRow();
tr.HorizontalAlign = HorizontalAlign.Left;
switch (pagerSettings.Mode)
{
case PagerButtons.NextPrevious:
this.CreateNextPrevPager(tr, pagedDataSource, false);
break;
case PagerButtons.Numeric:
this.CreateNumericPager(tr, pagedDataSource, false);
break;
case PagerButtons.NextPreviousFirstLast:
// this.CreateNextPrevPager(tr, pagedDataSource, true);
this.CreateDefaultNextPreviousFirstLastPager(tr, pagedDataSource);
break;
case PagerButtons.NumericFirstLast:
this.CreateNumericPager(tr, pagedDataSource, true);
break;
}
child.Rows.Add(tr);
panel.Controls.Add(child);
cell.Controls.Add(panel);
//导出
this.CreateExportControl(cell);
row.Cells.Add(cell);
}
/// <summary>
/// 创建默认分页
/// </summary>
/// <param name="row"></param>
/// <param name="pagedDataSource"></param>
protected virtual void CreateDefaultNextPreviousFirstLastPager(TableRow row, PagedDataSourceEx pagedDataSource)
{
PagerSettingsEx pagerSettings = this.PagerSettings;
bool isFirstPage = pagedDataSource.IsFirstPage;
bool isLastPage = pagedDataSource.IsLastPage;
TableCell cell = null;
if (this.AllowPaging)
{
//第一页。
this.CreatePagerButton(row, pagerSettings.FirstPageImageUrl, "第一页", 0, "First", isFirstPage);
//上一页
if (!isFirstPage)
this.CreatePagerButton(row, pagerSettings.PreviousPageImageUrl, "上一页", this.PageIndex - 1, "Prev", isFirstPage);
//下一页
if (!isLastPage)
this.CreatePagerButton(row, pagerSettings.NextPageImageUrl, "下一页", this.PageIndex + 1, "Next", isLastPage);
//最末页
this.CreatePagerButton(row, pagerSettings.LastPageImageUrl, "最末页", this.PageCount + 1, "Last", isLastPage);
//页面统计。
cell = new TableCell();
cell.Attributes["nowrap"] = "true";
HtmlGenericControl span = new HtmlGenericControl("span");
span.Attributes["style"] = "float:left;margin-left:2px;";
span.InnerText = string.Format("第{0}页/共{1}页 总记录数：{2}",
pagedDataSource.CurrentPageIndex + 1,
pagedDataSource.PageCount,
pagedDataSource.DataSourceCount);
cell.Controls.Add(span);
row.Cells.Add(cell);
//页面跳转。
cell = new TableCell();
cell.Attributes["nowrap"] = "true";
HtmlGenericControl div = new HtmlGenericControl("div");
div.Attributes["class"] = this.FooterInputCSS;
span = new HtmlGenericControl("span");
span.Attributes["style"] = "float:left;margin-left:2px;margin-top:3px;";
span.InnerText = "到第";
div.Controls.Add(span);
LinkButton linkBtn = new DataControlPagerLinkButton(this);
linkBtn.Attributes["style"] = "float:left;margin-top:2px;";
linkBtn.Text = "[GO]";
linkBtn.CommandName = "Page";
linkBtn.CommandArgument = (pagedDataSource.CurrentPageIndex + 1).ToString(NumberFormatInfo.InvariantInfo);
((DataControlPagerLinkButton)linkBtn).EnableCallback(this.BuildCallbackArgument(pagedDataSource.CurrentPageIndex));
TextBox numTextBox = new TextBox();
numTextBox.Text = (pagedDataSource.CurrentPageIndex + 1).ToString(NumberFormatInfo.InvariantInfo);
numTextBox.Attributes["style"] = "float:left;";
numTextBox.Attributes["onkeypress"] = "javascript:return event.keyCode>=48&&event.keyCode<=57;";
numTextBox.Attributes["ondragenter"] = "javascript:return false;";
numTextBox.Attributes["onpaste"] = "javascript:return !clipboardData.getData('text').match(/\\D/);";
numTextBox.Style.Add("ime-mode", "Disabled");
numTextBox.MaxLength = 5;
numTextBox.AutoPostBack = true;
numTextBox.TextChanged += new EventHandler(delegate(object sender, EventArgs e)
{
int pageNo = 1, pageCount = pagedDataSource.PageCount;
try
{
pageNo = int.Parse(((TextBox)sender).Text);
}
catch { }
if (pageNo > pageCount)
pageNo = pageCount;
linkBtn.CommandArgument = pageNo.ToString(NumberFormatInfo.InvariantInfo);
((DataControlPagerLinkButton)linkBtn).EnableCallback(this.BuildCallbackArgument(pageNo - 1));
});
div.Controls.Add(numTextBox);
span = new HtmlGenericControl("span");
span.Attributes["style"] = "float:left;margin-top:3px;";
span.InnerText = "页";
div.Controls.Add(span);
div.Controls.Add(linkBtn);
cell.Controls.Add(div);
row.Cells.Add(cell);
}
else
{
cell = new TableCell();
cell.Controls.Add(new LiteralControl(string.Format(" 总记录数：{0}",
pagedDataSource.DataSourceCount)));
row.Cells.Add(cell);
}
cell = new TableCell();
cell.Attributes["align"] = "right";
LinkButton pagerLinkBtn = new LinkButton();
pagerLinkBtn.Text = this.AllowPaging ? "[全部]" : "[分页]";
pagerLinkBtn.CssClass = this.FooterLinkCSS;
pagerLinkBtn.CausesValidation = false;
pagerLinkBtn.Command += new CommandEventHandler(delegate(object sender, CommandEventArgs e)
{
this.AllowPaging = !this.AllowPaging;
this.InvokeBuildDataSource();
});
cell.Controls.Add(pagerLinkBtn);
row.Cells.Add(cell);
}
/// <summary>
/// 创建用来构建控件层次结构的列字段集。
/// </summary>
/// <param name="dataSource">表示数据源。</param>
/// <param name="useDataSource">true 表示使用 dataSource 参数指定的数据源；否则为 false。</param>
/// <returns></returns>
protected virtual ICollection CreateColumns(PagedDataSourceEx dataSource, bool useDataSource)
{
ArrayList list = new ArrayList();
foreach (DataControlFieldEx field in this.Columns)
{
list.Add(field);
}
return list;
}
PagedDataSourceEx CreateServerPagedDataSource(int totalRowCount)
{
PagedDataSourceEx source = new PagedDataSourceEx();
source.CurrentPageIndex = this.PageIndex;
source.PageSize = this.PageSize;
source.AllowPaging = this.AllowPaging;
source.AllowCustomPaging = false;
source.AllowServerPaging = true;
source.VirtualCount = totalRowCount;
return source;
}
DataGridViewRow CreateRow(int rowIndex, int dataSourceIndex, DataGridViewRowType rowType, DataGridViewRowState rowState, bool dataBind,
object dataItem, DataControlFieldEx[] fields, TableRowCollection rows, PagedDataSourceEx pagedDataSource)
{
DataGridViewRow row = this.CreateRow(rowIndex, dataSourceIndex, rowType, rowState);
DataGridViewRowEventArgs e = new DataGridViewRowEventArgs(row);
if (rowType != DataGridViewRowType.Footer)
this.InitializeRow(row, fields);
else
this.InitializePager(row, fields.Length, pagedDataSource);
if (dataBind)
row.DataItem = dataItem;
this.OnRowCreated(e);
rows.Add(row);
if (dataBind)
{
row.DataBind();
this.OnRowDataBound(e);
row.DataItem = null;
}
return row;
}
