表格数据 按上下左右移动光标

/*!
*tableId:表格ID
*rowIndex：行号
*left:左边控件ID
*columnName:当前控件ID
*right:右边控件ID
*/
function inputKeyDown(tableId,rowIndex,left, columnName,right)
{

   key=window.event.keyCode;
  if(key>=37 && key<=40)
  {
    var index=rowIndex;
    var name=columnName;
    if (key==38 && rowIndex>1){//↑
       index=rowIndex-1;
    }else if (key==40 ){//↓
       index=rowIndex+1;
 
    }else if (key==37 && left){//←
       name=left;      
    }else  if (key==39 && right){//→
        name=right;
    }
    if(index>0 && name)  
    { 
     if(index<=9) 
         index="0"+index;
     var obj=document.getElementById(tableId+"_ctl"+(index)+"_"+name);
     if(obj &&  obj.disabled)
      obj.focus();     
    }
  }
}

该方法主要是针对Asp.net数据源控件自动生成行。如GridView的模板列生成。因为生成的控件的ID格式是固定的，如：数据源控件ID+“_clt”+行索引+“_”+该控件ID

<INPUT style="WIDTH: 90%" onkeydown="inputKeyDown('gvBuyAppDetailItem',2,'number',this.id,'hfUnit')" id=’gvBuyAppDetailItem_ctl02_MaterialID’ class=’TextBox’>

在行生成事件中添加代码：

if (e.Row.RowType == DataControlRowType.DataRow)
                {
                    for (int i = 0; i < e.Row.Cells.Count; i++)
                    {
                        if (e.Row.Cells[i].Controls.Count > 0 && e.Row.Cells[i].Controls[0] is WebControl)
                        { 
                             WebControl control=e.Row.Cells[i].Controls[0] as WebControl; 
                                string left = null;
                                string right=null;
                                if (i - 1 >= 0 && e.Row.Cells[i - 1].Controls.Count > 0)
                                    left = e.Row.Cells[i - 1].Controls[0].ID;
                               if (i + 1 <e.Row.Cells.Count && e.Row.Cells[i + 1].Controls.Count > 0)
                                    right = e.Row.Cells[i + 1].Controls[0].ID;
                                control.Attriubter.Add("onkeydown",string.Format( "inputKeyDown('{0}',{1},'{2}',{3} ,'{4}')",“GridView的id”,e.Row.RowIndex+2,left,control.ID,right));
                            }
                        }
}