gridview和checkboxlist的嵌套相关应用

<script type="text/javascript"> 
function CheckBoxList1_Click(obj) { 
if(obj<10) 
{ 
var vv="ctl00_PageBody_gvItem_ctl0"+obj+"_CheckBox1"; 
} 
else if(obj>=10 && obj<=99) 
{ 
var vv="ctl00_PageBody_gvItem_ctl"+obj+"_CheckBox1"; 
} 
else{ 
var vv="ctl00_PageBody_gvItem_ct"+obj+"_CheckBox1"; 
} 

if(obj<10) 
{ 
var vvv="ctl00_PageBody_gvItem_ctl0"+obj+"_gvInnerItem"; 
} 
else if(obj>=10 && obj <=99) 
{ 
var vvv="ctl00_PageBody_gvItem_ctl"+obj+"_gvInnerItem"; 
} 
else 
{ 
var vvv="ctl00_PageBody_gvItem_ct"+obj+"_gvInnerItem"; 
} 

if(document.getElementById(vv).checked) 
{ 
for(var i=0;i<document.getElementById(vvv).getElementsByTagName("input").length;i++) 

{ 
if(obj<10) 
{ 
var v = "ctl00_PageBody_gvItem_ctl0"+obj+"_gvInnerItem_"+i ; 
} 
else if(obj>=10 && obj<100) 
{ 
var v = "ctl00_PageBody_gvItem_ctl"+obj+"_gvInnerItem_"+i ; 
} 
else 
{ 
var v = "ctl00_PageBody_gvItem_ct"+obj+"_gvInnerItem_"+i ; 
} 
document.getElementById(v).checked=true; 
} 
} 
else 
{ 
for(var i=0;i<document.getElementById(vvv).getElementsByTagName("input").length;i++) 

{ 
if(obj<10) 
{ 
var v = "ctl00_PageBody_gvItem_ctl0"+obj+"_gvInnerItem_"+i ; 
} 
else if(obj>=10 && obj<100) 
{ 
var v = "ctl00_PageBody_gvItem_ctl"+obj+"_gvInnerItem_"+i ; 
} 
else 
{ 
var v = "ctl00_PageBody_gvItem_ct"+obj+"_gvInnerItem_"+i ; 
} 
//alert(v); 
document.getElementById(v).checked=false; 
} 
} 
// alert(document.getElementById(vvv).getElementsByTagName("input").length); 
} 
function selectAll() 
{ 
//alert(document.getElementById("ctl00_PageBody_gvItem").getElementsByTagName("input").length); 

if( document.getElementById("ctl00_PageBody_CheckBox2").checked) 
{ 
for(var i=0;i<document.getElementById("ctl00_PageBody_gvItem").getElementsByTagName("input").length;i++) 

{ 
if(i<8) 
{ 
document.getElementById("ctl00_PageBody_gvItem_ctl0"+(i+2)+"_CheckBox1").checked=true; 
var vvv="ctl00_PageBody_gvItem_ctl0"+(i+2)+"_gvInnerItem"; 
//alert(vvv); 
}else if(i>=8 && i<98) 
{ 
document.getElementById("ctl00_PageBody_gvItem_ctl"+(i+2)+"_CheckBox1").checked=true; 
var vvv="ctl00_PageBody_gvItem_ctl"+(i+2)+"_gvInnerItem"; 
// alert(vvv); 
} 
else 
{ 
document.getElementById("ctl00_PageBody_gvItem_ct"+(i+2)+"_CheckBox1").checked=true; 
var vvv="ctl00_PageBody_gvItem_ct"+(i+2)+"_gvInnerItem"; 
// alert(vvv); 
} 

for(var j=0;j<document.getElementById(vvv).getElementsByTagName("input").length;j++) 
{ 
if(i<8) 
{ 
var v = "ctl00_PageBody_gvItem_ctl0"+(i+2)+"_gvInnerItem_"+j ; 
}else if(i>=8 && i<98) 
{ 
var v = "ctl00_PageBody_gvItem_ctl"+(i+2)+"_gvInnerItem_"+j ; 
}else 
{ 
var v = "ctl00_PageBody_gvItem_ct"+(i+2)+"_gvInnerItem_"+j ; 
} 


//alert(v); 
document.getElementById(v).checked=true; 
} 
} 
} 
else 
{ 

for(var i=0;i<document.getElementById("ctl00_PageBody_gvItem").getElementsByTagName("input").length;i++) 

{ 
if(i<8) 
{ 
document.getElementById("ctl00_PageBody_gvItem_ctl0"+(i+2)+"_CheckBox1").checked=false; 
var vvv="ctl00_PageBody_gvItem_ctl0"+(i+2)+"_gvInnerItem"; 
// alert(vvv); 
}else if(i>=8 && i<98) 
{ 
document.getElementById("ctl00_PageBody_gvItem_ctl"+(i+2)+"_CheckBox1").checked=false; 
var vvv="ctl00_PageBody_gvItem_ctl"+(i+2)+"_gvInnerItem"; 
// alert(vvv); 
} 
else 
{ 
document.getElementById("ctl00_PageBody_gvItem_ct"+(i+2)+"_CheckBox1").checked=false; 
var vvv="ctl00_PageBody_gvItem_ct"+(i+2)+"_gvInnerItem"; 
// alert(vvv); 
} 

for(var j=0;j<document.getElementById(vvv).getElementsByTagName("input").length;j++) 
{ 
if(i<8) 
{ 
var v = "ctl00_PageBody_gvItem_ctl0"+(i+2)+"_gvInnerItem_"+j ; 
}else if(i>=8 && i<98) 
{ 
var v = "ctl00_PageBody_gvItem_ctl"+(i+2)+"_gvInnerItem_"+j ; 
}else 
{ 
var v = "ctl00_PageBody_gvItem_ct"+(i+2)+"_gvInnerItem_"+j ; 
} 


// alert(v); 
document.getElementById(v).checked=false; 
} 
} 
} 

} 
</script> 

<asp:GridView runat="server" ID="gvItem" OnRowDataBound="gvItem_RowCommand" DataKeyNames="state" 
Width="100%" AutoGenerateColumns="false"> 
<Columns> 
<asp:TemplateField HeaderText="选择省份"> 
<ItemTemplate> 
<asp:CheckBox runat="server" ID="CheckBox1" onclick="CheckBoxList1_Click(this.parentNode.parentNode.rowIndex+parseInt(1))" /> 
</ItemTemplate> 
</asp:TemplateField> 
<asp:BoundField DataField="State" HeaderText="省份名称" /> 
<asp:TemplateField HeaderText="选择地市"> 
<ItemTemplate> 
<div style="text-align: left"> 
<asp:CheckBoxList RepeatLayout="Flow" RepeatDirection="Horizontal" runat="server" 
ID="gvInnerItem" OnSelectedIndexChanged="gvInnerItem_SelectChange" AutoPostBack="false"> 
</asp:CheckBoxList> 
</div> 
</ItemTemplate> 
</asp:TemplateField> 
</Columns> 
</asp:GridView> 
<asp:CheckBox ID="CheckBox2" runat="server" AutoPostBack="True" Font-Size="9pt" Text="全选" 
onclick="selectAll()" />

protected void gvItem_RowCommand(object sender, GridViewRowEventArgs e) 
{ 
if (e.Row.RowType == DataControlRowType.DataRow) 
{ 
CheckBoxList oGridView = (CheckBoxList)e.Row.FindControl("gvInnerItem"); 
if (oGridView != null) 
{ 
string state = gvItem.DataKeys[e.Row.RowIndex].Value.ToString(); 
string sql = string.Format("select distinct(city) from CELLPHONESORT where state='{0}'", state); 
DataSet ds = MyDB.GetDataSet(sql); 

oGridView.DataSource = ds.Tables[0].DefaultView; 
oGridView.DataValueField = "city"; 
oGridView.DataTextField = "city"; 
oGridView.DataBind(); 
} 
} 
}