全编辑webgrid控件lrcgrid(5)—— 构造函数、变量和属性
lrcgrid从system.web.ui.webcontrols.table继承,实现inamingcontainer接口
元数据属性和构造函数:元数据声明了控件的标签和默认属性,构造函数为控件一些属性指定了默认值.
[
toolboxdata("<{0}:lrcgrid runat=server></{0}:lrcgrid>"),
defaultproperty("selsql")
]
public class lrcgrid : system.web.ui.webcontrols.table,inamingcontainer
{public lrcgrid() : base()
{
font.name = "verdana";
font.size = fontunit.point(8);
backcolor = color.white;
forecolor = color.black;
borderstyle = borderstyle.outset;
borderwidth = unit.parse("1px");
pagerstyle = pagerstyle.nextprev;
currentpageindex = 0;
itemsperpage = 15;
totalpages = -1;
ispager = true;
}......声明私有变量:
和分页相关的私有变量
#region 和分页有关的私有变量
// ***********************************************************************
private string currentpagetext = "<b>第</b> {0} <b>页,共</b> {1}<b>页</b>";
private string nopageselectedtext = "无选择页.";
private string querypagecommandtext = "select * from " +
"(select top {0} * from " +
"(select top {1} * from ({2}) as t0 order by {3} {4}) as t1 " +
"order by {3} {5}) as t2 " +
"order by {3}";
private string querycountcommandtext = "select count(*) from ({0}) as t0";
// ***********************************************************************
#endregion和属性有关的私有变量:
char[] chra = {','};
char[] chrb = {'|'};
//private dataset _ds;
//private datatable _dt;
private string tabn;
private string _prikey;
private string _editcol = "1";
private string _colsstr = "";
private string _colsstrcn = "";
private string _fkcol = "";
private bool _issort = true;
private bool _isrowedit;
private bool _istabchg = true;
private bool _isdel;
private bool _isadd;
private string _conn;
private color _titcolor;
控件属性,属性都有注释,不再细述:
/// <summary>
/// 外键指示
/// </summary>
[
category("关键"),
description("外键.格式:本表列名|外键列名|要显示的外键列名|外键表名,.....")
]
public string fkcol
{
get{return _fkcol;}
set{_fkcol = value;}
}
/// <summary>
/// 是否显示删除功能
/// </summary>
[
category("关键"),
description("是否显示删除功能")
]
public bool isdel
{
get{return _isdel;}
set{_isdel = value;}
}
/// <summary>
/// 是否显示添加功能
/// </summary>
[
category("关键"),
description("是否显示添加功能")
]
public bool isadd
{
get{return _isadd;}
set{_isadd = value;}
}
/// <summary>
/// 公共属性:显示列名
/// </summary>
[
category("关键"),
description("显示列名")
]
public string colsstrcn
{
get{return _colsstrcn;}
set{_colsstrcn = value;}
}
/// <summary>
/// 主表的表名
/// </summary>
[
category("关键"),
description("主表的表名")
]
public string tabn
{
get{return tabn;}
set{tabn = value;}
}
/// <summary>
/// 主表的列名列表
/// </summary>
[
category("关键"),
description("主表的列名列表")
]
public string colsstr
{
get{return _colsstr;}
set{_colsstr = value;}
}
/// <summary>
/// 是否用回车键跳转焦点
/// </summary>
[
category("关键"),
description("是否用回车键跳转焦点")
]
public bool istabchg
{
get{return _istabchg;}
set{_istabchg = value;}
}
/// <summary>
/// 选择sql语句.注意列名不能用'*'
/// </summary>
[
category("关键"),
description("选择sql语句.注意列名不能用'*'")
]
public string selsql
{
get{return (string)viewstate["lrcselsql"];}
set{viewstate["lrcselsql"] = value;}
}
/// <summary>
/// 主键列名,如有多个请用","隔开
/// </summary>
[
category("关键"),
description("主键列名,如有多个请用\",\"隔开")
]
public string prikey
{
get{return _prikey;}
set{_prikey = value;}
}
/// <summary>
/// 标题行颜色
/// </summary>
[
category("关键"),
description("标题行颜色")
]public color titcolor
{
get{ return _titcolor;}
set{ _titcolor = value;}
}
/// <summary>
/// 要进行编辑的列,列名用","隔开,0为不编辑,1为全编辑
/// </summary>
[
category("关键"),
description("要进行编辑的列,列名用\",\"隔开,0为不编辑,1为全编辑")
]
public string editcol
{
get{return _editcol;}
set{_editcol = value;}
}
[
browsable(false)
]
public string updsql
{
get{return ((htmlinputhidden)(this.findcontrol("lrchid_updsql"))).value;}
}
/// <summary>
/// 是否提供排序功能
/// </summary>
[
category("关键"),
description("是否提供排序功能")
]
public bool issort
{
get{return _issort;}
set{_issort = value;}
}
/// <summary>
/// 可否编辑行
/// </summary>
[
category("关键"),
description("可否编辑行")
]
public bool isrowedit
{
get{return _isrowedit;}
set{_isrowedit = value;}
}
/// <summary>
/// 要绑定室控件的数据集,可以在进行修改,
/// 但是请与以上各属性对应
/// </summary>
[
browsable(false)
]
public dataset dbset
{
get
{
if(viewstate["lrcds"] != null)
{
dataset _dbset = new dataset();
system.io.stringreader sr = new system.io.stringreader((string)viewstate["lrcds"]);
_dbset.readxml(sr);
return _dbset;
}
else
{
return null;
}
}
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