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asp.net關(guān)于GridViewCommandEventArgs參數(shù)的問題

.NET

慕尼黑5688855 2018-12-07 10:21:41

<%@ Page Language="C#" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"><script runat="server">??? protected void grdMovieCategories_RowCommand(object sender, GridViewCommandEventArgs e)??? {??????? int index = Int32.Parse((string)e.CommandArgument);??????? int id = (int)grdMovieCategories.DataKeys[index].Values["Id"];??????? int position = (int)grdMovieCategories.DataKeys[index].Values["Position"];??????? switch (e.CommandName)??????? {??????????? case "Up":??????????????? position--;??????????????? break;??????????? case "Down":??????????????? position++;??????????????? break;??????? }??????? srcMovieCategories.UpdateParameters["Id"].DefaultValue = id.ToString();??????? srcMovieCategories.UpdateParameters["Position"].DefaultValue = position.ToString();??????? srcMovieCategories.Update();??? }</script><html xmlns="http://www.w3.org/1999/xhtml" ><head runat="server">??? <title>Show ButtonField</title></head><body>??? <form runat="server">??? <div>?? ???? <asp:GridView??????? ??????? DataSource??????? DataKeyNames="Id,Position"??????? AutoGenerateColumns="false"??????? OnRowCommand="grdMovieCategories_RowCommand"??????? Runat="server">??????? <Columns>??????? <asp:ButtonField??????????? Text="Move Up"??????????? CommandName="Up" />??????? <asp:ButtonField??????????? Text="Move Down"??????????? CommandName="Down" />??????? <asp:BoundField??????????? DataField="Position"??????????? HeaderText="Position" />??????? <asp:BoundField??????????? DataField="Name"??????????? HeaderText="Category Name" />??????? </Columns>??? </asp:GridView>?? ??? ???? <asp:SqlDataSource??????? ??????? ConnectionString="<%$ ConnectionStrings:Movies %>"??????? SelectCommand="SELECT Id, Name, Position FROM MovieCategories??????????? ORDER BY Position"??????? UpdateCommand="UPDATE MovieCategories SET??????????? Position=@Position WHERE Id=@Id"??????? Runat="server">??????? <UpdateParameters>??????? <asp:Parameter??????????? Name="Id" />??????? <asp:Parameter??????????? Name="Position" />??????? </UpdateParameters>??? </asp:SqlDataSource>?????? ??? ???? </div>??? </form></body></html> 例如這么一個(gè)程序,e.CommandArgument怎么取出來行序列的?又沒有定義過CommandArgument的值

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2 回答

慕田峪9158850

TA貢獻(xiàn)1794條經(jīng)驗(yàn) 獲得超8個(gè)贊

是在這里定義的：

<asp:ButtonField
            Text="Move Up"
            CommandName="Up" />
        <asp:ButtonField
            Text="Move Down"
            CommandName="Down" />