存储过程实现无限级分类（3）

存储过程实现无限级分类（3）

最后一步显示分类（只是一条select语句）

CREATE PROCEDURE sp_Column_List

AS

SELECT Column_ID, Column_Name, Parent_ID, Column_Path, Column_Depth,

Column_Order, Column_Intro

FROM Tb_Column

ORDER BY Column_Order

GO

接下来就是在界面呈现了 ， 显示的时候用的是DataGrid

Html代码如下：

<asp:DataGrid id="DataGrid1" runat="server" AutoGenerateColumns="False" Width="520px" DataKeyField="Column_Id">

<Columns>

<asp:TemplateColumn HeaderText="分类信息">

<ItemTemplate>

<asp:Label id="lbname" runat="server"></asp:Label>

</ItemTemplate>

<EditItemTemplate>

<asp:TextBox id="tbdgname" runat="server" Text='<%#DataBinder.Eval(Container.DataItem,"Column_Name")%>'>

</asp:TextBox>

</EditItemTemplate>

</asp:TemplateColumn>

<asp:TemplateColumn HeaderText="添加子节点">

<ItemTemplate>

<a href="#" onclick="Open('AddSonCate.aspx?fid=<%#DataBinder.Eval(Container.DataItem,"Column_Id")%>','son',280,80)">添加子分类</a>

</ItemTemplate>

</asp:TemplateColumn>

<asp:TemplateColumn HeaderText="编辑">

<ItemTemplate>

<asp:LinkButton runat="server" Text="编辑" CommandName="Edit" CausesValidation="false"></asp:LinkButton>

</ItemTemplate>

<EditItemTemplate>

<asp:LinkButton runat="server" Text="更新" CommandName="Update" CausesValidation="False"></asp:LinkButton> 

<asp:LinkButton runat="server" Text="取消" CommandName="Cancel" CausesValidation="false"></asp:LinkButton>

</EditItemTemplate>

</asp:TemplateColumn>

<asp:TemplateColumn HeaderText="删除">

<ItemTemplate>

<asp:LinkButton runat="server" ID="lbdelete" Text="删除" CommandName="Delete" CausesValidation="false" CommandArgument='<%#DataBinder.Eval(Container.DataItem,"Column_Id")%>'>

</asp:LinkButton>

</ItemTemplate>

</asp:TemplateColumn>

</Columns>

</asp:DataGrid>

最关键的地方在DataGrid_ItemDataBind事件中

private void DataGrid1_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)

{

if(e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)

{

//得到Column_Name字段的值

string columnName = (string)DataBinder.Eval(e.Item.DataItem, "Column_Name");

string columnTemp = "";

//得到深度值Column_Depth

int columnDepth = Int32.Parse(DataBinder.Eval(e.Item.DataItem,"Column_Depth").ToString());

if(columnDepth>1)

{

for(int i = 1;i<columnDepth;i++)

{

columnTemp +="    ";

}

columnTemp+="┝";

}

Label lbname = (Label)e.Item.FindControl("lbname");

lbname.Text = columnTemp+columnName ;

LinkButton lbdelete = (LinkButton)e.Item.FindControl("lbdelete");

lbdelete.Attributes.Add("OnClick","JavaScript:return confirm('确实要删掉此分类吗？');");

}

}

Over!