GridView里面的内嵌的服务器控件如LinkButton如何传值？

GridView里面的内嵌的服务器控件如LinkButton如何传值到LinkButton 事件中

<asp:GridView ID="GridView1" runat="server" AllowPaging="True" AutoGenerateColumns="False"
CellPadding="4" DataKeyNames="Code" DataSourceID="ObjectDataSource1" ForeColor="#333333"
GridLines="Vertical" Width="100%" PageSize="6">
<FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<Columns>
<asp:BoundField DataField="publishType" HeaderText="杂志类型" >
<ItemStyle HorizontalAlign="Center" />
</asp:BoundField>
<asp:BoundField DataField="magCode" HeaderText="杂志编号" />
<asp:BoundField DataField="Name" HeaderText="杂志名称" />
<asp:BoundField DataField="Volumn" HeaderText="刊数" SortExpression="Volumn" />
<asp:BoundField DataField="Code" HeaderText="期刊编号" SortExpression="Code" />
<asp:CheckBoxField DataField="CanPublish" HeaderText="发布" />
<asp:BoundField DataField="Category" HeaderText="所属分类" />
<asp:BoundField DataField="Author" HeaderText="作者" />
<asp:BoundField DataField="Brief" HeaderText="摘要内容" />
<asp:TemplateField ShowHeader="False">
<ItemStyle HorizontalAlign="Center" Width="40px" />
<ItemTemplate>
<asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl='<%# Doker.WebSite.AppCode.UrlLinks.GetMagazineDetailPreview(Eval("PublishType"),Eval("Code")) %>' Target="_blank">预览</asp:HyperLink>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField ShowHeader="False">
<ItemStyle HorizontalAlign="Center" Width="40px" />
<ItemTemplate>
<asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="False" CommandName="Generate"
OnClick="LinkButton1_Click" Text="生成" CommandArgument='<%# Eval("Code") %>'></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField ShowHeader="False">
<ItemStyle HorizontalAlign="Center" Width="40px" />
<ItemTemplate>
<asp:LinkButton ID="LinkButton2" runat="server" CausesValidation="False" CommandName="Publish"
OnClick="LinkButton2_Click" Text="发布" CommandArgument='<%# Eval("Code") %>'></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
<RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
<EditRowStyle BackColor="#999999" />
<SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
<PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Left" />
<HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<AlternatingRowStyle BackColor="White" ForeColor="#284775" />
</asp:GridView>
从代码可以看出LinkButton是通过CommandArgument='<%# Eval("Code") %>属性把字段"Code"传给事件。
在事件中又始何获取CommandArgument的值呢？如下代码：
string _code = ((LinkButton)sender).CommandArgument;
这边有一个小小的技巧是：点击LinkButton那一行的数据存储在GridViewRow中，然后再能过GridViewRow获取字段值，（注意sender就是LinkButton）代码如下：

protected void LinkButton1_Click(object sender, EventArgs e)
{
LinkButton btn = sender as LinkButton;
GridViewRow row = btn.Parent.Parent as GridViewRow;

SeedMaker sm = new SeedMaker();

string publishType = string.Empty;
string magName = string.Empty;
string magBtype = string.Empty;
string magStype = string.Empty;
string magCode = string.Empty;
string magVol = string.Empty;
string volCode = string.Empty;
string magCate = string.Empty;
string content = string.Empty;
string author = string.Empty;

publishType = row.Cells[0].Text;
magCode = row.Cells[1].Text;
magName = row.Cells[2].Text;
magVol = row.Cells[3].Text;
volCode = row.Cells[4].Text;
magCate = row.Cells[6].Text;
author = row.Cells[7].Text;
content = row.Cells[8].Text;
}