Question

对于一个错误说明

的按钮，我一直有一个非常奇怪的，可能是非常明显的错误

编译器错误消息：CS1061：＆＃39; admin_roles_aspx＆＃39;不包含＆＃39; DeleteRole＆＃39;的定义没有扩展方法＆＃39; DeleteRole＆＃39; 接受类型＆＃39; admin_roles_aspx＆＃39;的第一个参数。可以找到（您是否缺少using指令或程序集引用？）

首先我有＆＃39; Button1＆＃39;使用＆＃34; DeleteRole＆＃34;作为OnCommand如下

<asp:GridView runat="server" ID="UserRoles" AutoGenerateColumns="false"
    CssClass="list" AlternatingRowStyle-CssClass="odd" GridLines="none"
    >
    <Columns>
        <asp:TemplateField>
            <HeaderTemplate>Role Name</HeaderTemplate>
            <ItemTemplate>
                <%# Eval("Role Name") %>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField>
            <HeaderTemplate>User Count</HeaderTemplate>
            <ItemTemplate>
                <%# Eval("User Count") %>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField>
            <HeaderTemplate>Delete Role</HeaderTemplate>
            <ItemTemplate>
                <asp:Button ID="Button1" runat="server" OnCommand="DeleteRole" CommandName="DeleteRole" CommandArgument='<%# Eval("Role Name") %>' Text="Delete" OnClientClick="return confirm('Are you sure?')" />
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

然后我有＆＃39; DeleteRole＆＃39;在roles.aspx.cs中创建

public partial class roles : System.Web.UI.Page
    {
        private bool createRoleSuccess = true;

        private void Page_PreRender()
        {
            // Create a DataTable and define its columns
            DataTable RoleList = new DataTable();
            RoleList.Columns.Add("Role Name");
            RoleList.Columns.Add("User Count");

            string[] allRoles = Roles.GetAllRoles();

            // Get the list of roles in the system and how many users belong to each role
            foreach (string roleName in allRoles)
            {
                int numberOfUsersInRole = Roles.GetUsersInRole(roleName).Length;
                string[] roleRow = { roleName, numberOfUsersInRole.ToString() };
                RoleList.Rows.Add(roleRow);
            }

            // Bind the DataTable to the GridView
            UserRoles.DataSource = RoleList;
            UserRoles.DataBind();

            if (createRoleSuccess)
            {
                // Clears form field after a role was successfully added. Alternative to redirect technique I often use.
                NewRole.Text = "";
            }
        }
        private void DeleteRole(object sender, CommandEventArgs e)
        {
            try
            {
                Roles.DeleteRole(e.CommandArgument.ToString());
                ConfirmationMessage.InnerText = "Role '" + e.CommandArgument.ToString() + "' was deleted.";
            }
            catch (Exception ex)
            {
                ConfirmationMessage.InnerText = ex.Message;
            }
        }

有没有人有任何建议，因为它现在开始让我感到沮丧（可能是因为我的编程缺乏经验）。提前谢谢，如果我是白痴，请保持温柔，因为我的技能显然不是很好。感谢。

编译错误查找按钮的定义 - ASP.NET

0 个答案: