存贮过程实现分页
using System; using System.Text; using System.Web.UI; using System.Web.UI.WebControls; using System.Collections.Specialized; using System.ComponentModel; using System.Data; using System.Data.SqlClient; namespace WebAppInc { /// <summary> /// /* ///函数名称: GetRecordFromPage ///函数功能: 获取指定页的数据 ///参数说明: ///@tblName 包含数据的表名 ///@PKName 关键字段名 ///@strGotFields 要获取的字段 ///@PageSize 每页记录数 ///@PageIndex 要获取的页码 ///@OrderType 排序类型, 0 - 升序, 1 - 降序 ///@strWhere 查询条件 (注意: 不要加 where) ///@isCount 是否取得记录条数 , 0 - 不取 , 1 - 获取 /// @strSort 排序字段 ///*/ /// </summary> [DefaultProperty("EnableCustomerStyle"), ToolboxData("<{0}:CusPageCtrl runat=server></{0}:CusPageCtrl>")] public class CusPageCtrl:System.Web.UI.Control, IPostBackDataHandler, IPostBackEventHandler { private int _PageSize; private int _PageCount; private string _TableName; private string _SelectFields; private string _SortField; private int _CurPageIndex; private string _btDGrid; private DataView _datasource; private OrderType itype; private string _SelectWhere; private string _DataKeyField; private string _selectClass; private bool isCount = true; private string _itemClass; public enum OrderType { Asc,Desc } public string PageCssClass { get{ return _itemClass; } set{ _itemClass = value;} } public string CurPageCssClass { get{ return _selectClass; } set{ _selectClass = value;} } /// <summary> /// 排序方式 /// </summary> [Bindable(true),Category("Appearance"),DefaultValue("")] public OrderType Order { get{ return itype; } set{ itype = value;} } /// <summary> /// 分页数 /// </summary> public int PageCount { get{ return _PageCount; } } /// <summary> /// 关键字段 /// </summary> [Bindable(true),Category("Appearance"),DefaultValue("")] public string SelectKeyField { get{ return _DataKeyField; } set{ _DataKeyField = value;} } /// <summary> /// 杳询条件 /// </summary> [Bindable(true),Category("Appearance"),DefaultValue("")] public string SelectWhere { get{ return _SelectWhere; } set{ _SelectWhere = value; } } /// <summary> /// 数据源 /// </summary> public DataView DataSource { get{ return _datasource; } //set{ _datasource = value;} } /// <summary> /// 要绑定的 DataGrid 控件 /// </summary> [Bindable(true),Category("Appearance"),DefaultValue("")] public string BindToDataGrid { get{ return _btDGrid; } set{ _btDGrid = value; } } /// <summary> /// 当前页码索引 /// </summary> [Bindable(true),Category("Appearance"),DefaultValue("")] public int CurPageIndex { get{ return _CurPageIndex; } set{ _CurPageIndex = value; } } /// <summary> /// 排序字段 /// </summary> [Bindable(true),Category("Appearance"),DefaultValue("")] public string SortField { get{ return _SortField; } set{ _SortField = value;} } /// <summary> /// 分页记录条数 /// </summary> [Bindable(true),Category("Appearance"),DefaultValue("25")] public int PageSize { get{ return _PageSize; } set{ _PageSize = value; } } /// <summary> /// 查询数据来源表格 /// </summary> [Bindable(true),Category("Appearance"),DefaultValue("")] public string TableName { get{ return _TableName; } set{ _TableName = value;} } /// <summary> /// 查询字段 /// </summary> [Bindable(true),Category("Appearance"),DefaultValue("")] public string SelectFields { get{ return _SelectFields; } set{ _SelectFields = value; } } public bool LoadPostData(string postDataKey, NameValueCollection values) { _CurPageIndex = Int32.Parse(values[this.UniqueID]); return false; } public void RaisePostDataChangedEvent() { // IPostBackDataHandler 协定的一部分。如果曾经从 LoadPostData 方法返回真 // （表示需要引发更改通知），则被调用。由于 // 始终返回假，则此方法只是一个空操作。 } public void RaisePostBackEvent(string eventArgument) { this.CurPageIndex = Convert.ToInt32(eventArgument); GetDataSource(); } protected override void OnPreRender(EventArgs e) { //Page.RegisterPostBackScript(); //Page.Response.Write("2"); } protected override void OnInit(EventArgs e) { DataGrid dGrid = (DataGrid)this.Parent.FindControl(this.BindToDataGrid); dGrid.SortCommand += new DataGridSortCommandEventHandler(dGrid_SortCommand); GetDataSource(); //获取数据源 GetDataSourcePageCount(); //获取页码数量 base.OnInit (e); } protected override void Render(HtmlTextWriter output) { //Page.Response.Write("3：" + this.PageCount.ToString()); int max; int min; int i,len; int ShowSize = 10; string tmp = null; min = Convert.ToInt32(Math.Floor((this.CurPageIndex + 1) / ShowSize)) * ShowSize; max = min + ShowSize; len = this.PageCount; if(max > len) { max = len; } output.Write("<Div class=\"" + PageCssClass + "\">"); if(min >= ShowSize) { output.Write("<a style=\"cursor:hand\" onClick= \"jscript:"+ Page.GetPostBackEventReference(this, (min-2).ToString())+ "\" title=\"向前翻页\"><font face=webdings>9</font></a> "); } for(i = min;i < max ;i++ ) { if(i == this.CurPageIndex) { tmp = "<font class=\"" + this.CurPageCssClass + "\">" + (i+1).ToString() + "</font>"; } tmp = (i+1).ToString(); if(i < max - 1) { output.Write("<a style=\"cursor:hand\" onclick= \"jscript:"+ Page.GetPostBackEventReference(this, i.ToString())+ "\">" + tmp + "</a>"); } if(i < max - 2) { output.Write(" | "); } else if(i == max - 1 && (max == min + 10)) { output.Write(" <a style=\"cursor:hand\" onClick= \"jscript:"+ Page.GetPostBackEventReference(this, i.ToString())+ "\" title=\"向后翻页\"><font face=webdings>:</font></a>"); } } output.Write("</Div>"); output.Write("<input type=\"hidden\" name=" + this.UniqueID + " type=text value=" + this.CurPageIndex + ">"); if(max <= 0) { output.Write("无数据！"); } } private void GetDataSourcePageCount() { if(ViewState["CurPageCount"] == null) { this.isCount = true; } else { return; } try { SqlParameter[] arParams = new SqlParameter[9]; arParams[0] = new SqlParameter("@tblName",SqlDbType.VarChar,255); arParams[0].Value = this.TableName; arParams[1] = new SqlParameter("@strGotFields",SqlDbType.VarChar,1000); arParams[1].Value = this.SelectFields; arParams[2] = new SqlParameter("@strSort",SqlDbType.VarChar,200); arParams[2].Value = this.SelectKeyField; arParams[3] = new SqlParameter("@OrderType",SqlDbType.Bit); arParams[3].Value = true; arParams[4] = new SqlParameter("@PageSize",SqlDbType.Int); arParams[4].Value = this.PageSize; arParams[5] = new SqlParameter("@PageIndex",SqlDbType.Int); arParams[5].Value = 1; arParams[6] = new SqlParameter("@strWhere",SqlDbType.VarChar,2000); arParams[6].Value = this.SelectWhere; arParams[7] = new SqlParameter("@isCount",SqlDbType.Bit); arParams[7].Value = this.isCount; arParams[8] = new SqlParameter("@PKName",SqlDbType.VarChar,200); arParams[8].Value = this.SelectKeyField; ViewState["CurPageCount"] = Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteScalar (ForDataBase.ConnectionString,CommandType.StoredProcedure, "GetRecordFromPage",arParams).ToString(); this._PageCount = Convert.ToInt32(Math.Ceiling (Convert.ToInt32(ViewState["CurPageCount"]) / this.PageSize)); this._PageCount = Convert.ToInt32(ViewState["CurPageCount"]) / this.PageSize; } catch(Exception ex) { Page.Response.Write(ex.Message); } //Page.Response.Write(ViewState["CurPageCount"].ToString()); } |
{
bool tmp = true;
DataSet ds = new DataSet();
if(itype == OrderType.Desc)
{
tmp = false;
}
this.isCount = false;
SqlParameter[] arParams = new SqlParameter[9];
arParams[0] = new SqlParameter("@tblName",SqlDbType.VarChar,255);
arParams[0].Value = this.TableName;
arParams[1] = new SqlParameter("@strGotFields",SqlDbType.VarChar,1000);
arParams[1].Value = this.SelectFields;
arParams[2] = new SqlParameter("@strSort",SqlDbType.VarChar,200);
arParams[2].Value = this.SortField;
arParams[3] = new SqlParameter("@OrderType",SqlDbType.Bit);
arParams[3].Value = tmp;
arParams[4] = new SqlParameter("@PageSize",SqlDbType.Int);
arParams[4].Value = this.PageSize;
arParams[5] = new SqlParameter("@PageIndex",SqlDbType.Int);
arParams[5].Value = this.CurPageIndex + 1;
arParams[6] = new SqlParameter("@strWhere",SqlDbType.VarChar,2000);
arParams[6].Value = this.SelectWhere;
arParams[7] = new SqlParameter("@isCount",SqlDbType.Bit);
arParams[7].Value = this.isCount;
arParams[8] = new SqlParameter("@PKName",SqlDbType.VarChar,200);
arParams[8].Value = this.SelectKeyField;
ds = Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteDataset
(WebAppInc.ForDataBase.ConnectionString,
CommandType.StoredProcedure,"GetRecordFromPage",arParams);
this._datasource = ds.Tables[0].DefaultView;
Page.Response.Write(Parent.FindControl(this.BindToDataGrid).ToString());
DataGrid dGrid = (DataGrid)this.Parent.FindControl(this.BindToDataGrid);
if(this.SortField != String.Empty)
{
ViewState["Sort"] = this.SortField;
if(tmp == true)
{
ViewState["Order"] = "asc";
}
else
{
ViewState["Order"] = "desc";
}
//DataGrid 控件排序样式
if(ViewState["Sort"] != null)
{
int i=0;
string strtmp = null;
for(i=0;i<dGrid.Columns.Count;i++)
{
strtmp = dGrid.Columns[i].HeaderText;
strtmp = strtmp.Replace("<font face=\"Webdings\">6</font>","");
strtmp = strtmp.Replace("<font face=\"Webdings\">5</font>","");
dGrid.Columns[i].HeaderText = strtmp;
if(dGrid.Columns[i].SortExpression == ViewState["Sort"].ToString())
{
if(ViewState["Order"].ToString() == "desc")
{
dGrid.Columns[i].HeaderText = strtmp + "<font face=\"Webdings\">6</font>";
}
else
{
dGrid.Columns[i].HeaderText = strtmp + "<font face=\"Webdings\">5</font>";
}
}
}
}
}
dGrid.DataSource = this._datasource;
dGrid.DataBind();
//Page.Response.Write("<br>Exe Sort：" + SortField);
}
private void dGrid_SortCommand(object source,
System.Web.UI.WebControls.DataGridSortCommandEventArgs e)
{
this.SortField = e.SortExpression;
string sort = e.SortExpression;
if(ViewState["Sort"] != null)
{
if(ViewState["Sort"].ToString() != sort)
{
ViewState["Sort"] = sort;
ViewState["Order"] = "desc";
}
else
{
if(ViewState["Order"].ToString() == "desc")
{
ViewState["Order"] = "asc";
}
else
{
ViewState["Order"] = "desc";
}
}
}
else
{
ViewState["Sort"] = sort;
ViewState["Order"] = "desc";
}
if(ViewState["Order"].ToString() == "desc")
{
this.Order = OrderType.Desc;
}
else
{
this.Order = OrderType.Asc;
}
GetDataSource();
//Page.Response.Write("<br>Sort：" + SortField);
}
}