扩展GridView控件(5) - 固定指定行、指定列

/*正式版的实现 开始*/

/*固定行*/ 
.yy_sgv_fixRow 
{  
        position:  relative;  top:  expression(this.offsetParent.scrollTop - 1); 
}  
/*固定列*/ 
.yy_sgv_fixCol 
{  
        position:  relative;  left:  expression(this.offsetParent.scrollLeft - 1); 
}  
/*高优先级的固定*/ 
.yy_sgv_fixHigh 
{  
        z-index:  9999; 
}  
/*低优先级的固定*/ 
.yy_sgv_fixLow 
{  
        z-index:  1000; 
}

using System; 
using System.Collections.Generic; 
using System.Text; 
 
using System.Web.UI.WebControls; 
using System.Web.UI; 
 
namespace YYControls.SmartGridViewFunction 
{ 
         /// <summary> 
         /// 扩展功能：固定指定行、指定列 
         /// </summary> 
         public  class FixRowColumnFunction : ExtendFunction 
        { 
                 /// <summary> 
                 /// 构造函数 
                 /// </summary> 
                 public FixRowColumnFunction() 
                        :  base() 
                { 
 
                } 
 
                 /// <summary> 
                 /// 构造函数 
                 /// </summary> 
                 /// <param name="sgv">SmartGridView对象</param> 
                 public FixRowColumnFunction(SmartGridView sgv) 
                        :  base(sgv) 
                { 
 
                } 
 
                 /// <summary> 
                 /// 扩展功能的实现 
                 /// </summary> 
                 protected  override  void Execute() 
                { 
                         this._sgv.RowDataBoundCell +=  new SmartGridView.RowDataBoundCellHandler(_sgv_RowDataBoundCell); 
                         this._sgv.RenderBegin +=  new SmartGridView.RenderBeginHandler(_sgv_RenderBegin); 
                         this._sgv.RenderEnd +=  new SmartGridView.RenderEndHandler(_sgv_RenderEnd); 
                } 
 
                 /// <summary> 
                 /// SmartGridView的RowDataBoundCell事件 
                 /// </summary> 
                 /// <param name="sender"></param> 
                 /// <param name="gvtc"></param> 
                 void _sgv_RowDataBoundCell( object sender, GridViewTableCell gvtc) 
                { 
                        TableCell tc = gvtc.TableCell; 
                        GridViewRow gvr = (GridViewRow)tc.Parent; 
 
                         int i = 0;  // 0-既不固定行也不固定列；1-固定行或固定列；2-既固定行也固定列 
                         // 固定行 
                         if    
                        ( 
                                ( 
                                        !String.IsNullOrEmpty( this._sgv.FixRowColumn.FixRows)    
                                        &&    
                                        Array.Exists( this._sgv.FixRowColumn.FixRows.Split(','),  delegate( string s) {  return s == gvr.RowIndex.ToString(); }) 
                                ) 
                                ||    
                                ( 
                                        !String.IsNullOrEmpty( this._sgv.FixRowColumn.FixRowType)    
                                        &&    
                                        Array.Exists( this._sgv.FixRowColumn.FixRowType.Split(','),  delegate( string s) {  return s == gvr.RowType.ToString(); }) 
                                ) 
                                ||    
                                ( 
                                        !String.IsNullOrEmpty( this._sgv.FixRowColumn.FixRowState)    
                                        &&    
                                        Array.Exists( this._sgv.FixRowColumn.FixRowState.Split(','),  delegate( string s) {  return s == gvr.RowState.ToString(); }) 
                                ) 
                        ) 
                        { 
                                i++; 
                                Helper.Common.SetAttribute(tc,  "class",  "yy_sgv_fixRow", AttributeValuePosition.Last, ' '); 
                        } 
                         // 固定列 
                         if    
                                ( 
                                        !String.IsNullOrEmpty( this._sgv.FixRowColumn.FixColumns) 
                                        && 
                                        Array.Exists( this._sgv.FixRowColumn.FixColumns.Split(','),  delegate( string s) {  return s == gvtc.ColumnIndex.ToString(); }) 
                                ) 
                        { 
                                i++; 
                                Helper.Common.SetAttribute(tc,  "class",  "yy_sgv_fixCol", AttributeValuePosition.Last, ' '); 
                        } 
 
                         // 低等级的z-index 
                         if (i == 1) 
                        { 
                                Helper.Common.SetAttribute(tc,  "class",  "yy_sgv_fixLow", AttributeValuePosition.Last, ' '); 
                        } 
                         // 高等级的z-index 
                         else  if (i == 2) 
                        { 
                                Helper.Common.SetAttribute(tc,  "class",  "yy_sgv_fixHigh", AttributeValuePosition.Last, ' '); 
                        } 
                } 
 
                 /// <summary> 
                 /// RenderBegin 
                 /// </summary> 
                 /// <param name="sender"></param> 
                 /// <param name="writer"></param> 
                 void _sgv_RenderBegin( object sender, HtmlTextWriter writer) 
                { 
                        writer.AddStyleAttribute(HtmlTextWriterStyle.Overflow,  "auto"); 
                        writer.AddStyleAttribute(HtmlTextWriterStyle.Position,  "relative"); 
                        writer.AddStyleAttribute(HtmlTextWriterStyle.Width, String.IsNullOrEmpty( this._sgv.FixRowColumn.TableWidth) ?  "100%" :  this._sgv.FixRowColumn.TableWidth); 
                        writer.AddStyleAttribute(HtmlTextWriterStyle.Height, String.IsNullOrEmpty( this._sgv.FixRowColumn.TableHeight) ?  "100%" :  this._sgv.FixRowColumn.TableHeight); 
                        writer.RenderBeginTag(HtmlTextWriterTag.Div); 
                } 
 
                 /// <summary> 
                 /// RenderEnd 
                 /// </summary> 
                 /// <param name="sender"></param> 
                 /// <param name="writer"></param> 
                 void _sgv_RenderEnd( object sender, HtmlTextWriter writer) 
                { 
                        writer.RenderEndTag(); 
                } 
        } 
}

/*正式版的实现 结束*/

/*测试版的实现 开始*/

/// <summary> 
         /// 继承自GridView 
         /// </summary> 
        [ToolboxData( @"<{0}:SmartGridView runat='server'></{0}:SmartGridView>")] 
         public  class SmartGridView : GridView, IPostBackDataHandler 
        { 
 
        }

using System; 
using System.Collections.Generic; 
using System.Text; 
 
using System.ComponentModel; 
 
namespace YYControls.SmartGridView 
{ 
         /// <summary> 
         /// 固定表头、指定行或指定列的实体类 
         /// </summary> 
        [TypeConverter( typeof(ExpandableObjectConverter))] 
         public  class FixRowCol 
        { 
                 private  bool _isFixHeader; 
                 /// <summary> 
                 /// 固定表头否？ 
                 /// </summary> 
                [Description( "固定表头否？"), Category( "扩展"), DefaultValue( false), NotifyParentProperty( true)] 
                 public  virtual  bool IsFixHeader 
                { 
                        get {  return _isFixHeader; } 
                        set { _isFixHeader = value; } 
                } 
 
                 private  bool _isFixPager; 
                 /// <summary> 
                 /// 固定分页行否？ 
                 /// </summary> 
                [Description( "固定分页行否？"), Category( "扩展"), DefaultValue( false), NotifyParentProperty( true)] 
                 public  virtual  bool IsFixPager 
                { 
                        get {  return _isFixPager; } 
                        set { _isFixPager = value; } 
                } 
 
                 private  string _fixRowIndices; 
                 /// <summary> 
                 /// 需要固定的行的索引（用逗号“,”分隔） 
                 /// </summary> 
                [Description( "需要固定的行的索引（用逗号“,”分隔）"), Category( "扩展"), NotifyParentProperty( true)] 
                 public  virtual  string FixRowIndices 
                { 
                        get {  return _fixRowIndices; } 
                        set { _fixRowIndices = value; } 
                } 
 
                 private  string _fixColumnIndices; 
                 /// <summary> 
                 /// 需要固定的列的索引（用逗号“,”分隔） 
                 /// </summary> 
                [Description( "需要固定的列的索引（用逗号“,”分隔）"), Category( "扩展"), NotifyParentProperty( true)] 
                 public  virtual  string FixColumnIndices 
                { 
                        get {  return _fixColumnIndices; } 
                        set { _fixColumnIndices = value; } 
                } 
 
                 private System.Web.UI.WebControls.Unit _tableWidth; 
                 /// <summary> 
                 /// 表格的宽度 
                 /// </summary> 
                [Description( "表格的宽度"), Category( "扩展"), NotifyParentProperty( true)] 
                 public System.Web.UI.WebControls.Unit TableWidth 
                { 
                        get {  return _tableWidth; } 
                        set { _tableWidth = value; } 
                } 
 
                 private System.Web.UI.WebControls.Unit _tableHeight; 
                 /// <summary> 
                 /// 表格的高度 
                 /// </summary> 
                [Description( "表格的高度"), Category( "扩展"), NotifyParentProperty( true)] 
                 public System.Web.UI.WebControls.Unit TableHeight 
                { 
                        get {  return _tableHeight; } 
                        set { _tableHeight = value; } 
                } 
 
                 private  bool _enableScrollState; 
                 /// <summary> 
                 /// 是否保持滚动条的状态 
                 /// </summary> 
                [Description( "是否保持滚动条的状态"), Category( "扩展"), DefaultValue( false), NotifyParentProperty( true)] 
                 public  bool EnableScrollState 
                { 
                        get {  return _enableScrollState; } 
                        set { _enableScrollState = value; } 
                } 
 
                 /// <summary> 
                 /// ToString(); 
                 /// </summary> 
                 /// <returns></returns> 
                 public  override  string ToString() 
                { 
                         return  "FixRowCol"; 
                } 
        } 
}

private FixRowCol _fixRowCol; 
                 /// <summary> 
                 /// 固定表头、指定行或指定列 
                 /// </summary> 
                [ 
                Description( "固定表头、指定行或指定列"), 
                Category( "扩展"), 
                DefaultValue(""), 
                DesignerSerializationVisibility(DesignerSerializationVisibility.Content), 
                PersistenceMode(PersistenceMode.InnerProperty) 
                ] 
                 public  virtual FixRowCol FixRowCol 
                { 
                        get 
                        { 
                                 if (_fixRowCol ==  null) 
                                { 
                                        _fixRowCol =  new FixRowCol(); 
                                } 
                                 return _fixRowCol; 
                        } 
                }