大侠请进!

Question

从数据库中查询出所有用户名，我想在每个用户名前面加一个复选框，可以选择任意几个，用gridview吧？要是固定的就简单了，把任意选中的用户名显示在label上就可了，初学不知怎么实现，

Answer 1

    <form id="form1" runat="server">
    <div>
        <asp:CheckBoxList ID="cboxList" runat="server">
            <asp:ListItem Text="张三" Value="1"></asp:ListItem>
            <asp:ListItem Text="李四" Value="2"></asp:ListItem>
            <asp:ListItem Text="王五" Value="3"></asp:ListItem>
            <asp:ListItem Text="赵六" Value="4"></asp:ListItem>
        </asp:CheckBoxList>
    </div>
    <div>
        <asp:Button ID="btnSubmit" runat="server" Text="显示" onclick="btnSubmit_Click" />
    </div>
    <div>
        <asp:Label ID="lblUserName" runat="server" Text=""></asp:Label>
    </div>
    </form>
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            BindUserName();
        }
    }    private void BindUserName()
    {
        //数据源
        var list = new[]{
            new {Text="张三",Value="1"},
            new {Text="李四",Value="2"},
            new {Text="王五",Value="3"},
            new {Text="赵六",Value="4"}
        }.ToList();        //绑定数据
        cboxList.DataSource = list;
        cboxList.DataTextField = "Text";
        cboxList.DataValueField = "Value";
        cboxList.DataBind();
    }
    protected void btnSubmit_Click(object sender, EventArgs e)
    {
        string userName = string.Empty;        foreach (ListItem cbox in cboxList.Items)
        {
            if (cbox.Selected)
            {
                userName += cbox.Text + "-";
            }
        }
        lblUserName.Text = userName.TrimEnd('-');    }

Answer 2

如果只显示checkbox+用户名的组合，建议用checkboxlist如果显示项不取这么多可以选择用repeater控件ItemCommand事件中去处理你要做的事

Answer 3

GridView设置模板列，其中一列放复选框，应该不难的。

Answer 4

就是不知道有多少用户，有可能几个，也可能几十个，甚至几百个，我觉得3楼比较符合我的意思，几位大侠能否给个具体的例子。GridView设置模板列，其中一列放复选框这些都不难，可是怎么表示其中某一个被选中了呢，这些复选框跟普通复选框有区别吗？

Answer 5

前端aspx页面：
<script type="text/javascript" language="javascript">
function CheckItem(Text)
{
    var form=document.forms[0];
    var j=0;
    for( i=0;i<form.elements.length; i++)
    {
       if( form.elements[i].checked && form.elements[i].id!="chkAll")
       {
            j=1;
            break;
       }
    }
    if(j==1)
    {
       return confirm(Text);
    } 
    else
    {
       alert("请选择项！")
       return false;
    }
}
    </script>
<asp:GridView ID="gvDictionary" BorderColor="#C1DAD7" runat="server" Width="100%"
                                AutoGenerateColumns="False" SkinID="gridviewSkin1" DataKeyNames="DictionaryId">
                                <Columns>
                                    <asp:TemplateField HeaderText="字典编号">
                                        <HeaderStyle HorizontalAlign="Center" />
                                        <ItemTemplate>
                                            <asp:CheckBox ID="chkDictionaryId" runat="server" />
                                            <asp:Label ID="Label1" runat="server" Text='<%# Eval("DictionaryID") %>'></asp:Label>
                                        </ItemTemplate>
                                    </asp:TemplateField>
                                    <asp:BoundField DataField="DictTypeTitle" HeaderText="字典类别">
                                        <HeaderStyle HorizontalAlign="Center" />
                                        <ItemStyle HorizontalAlign="Center" Width="120px" />
                                    </asp:BoundField>
                                    <asp:BoundField DataField="DictText" HeaderText="显示值">
                                        <ItemStyle HorizontalAlign="Center" />
                                        <HeaderStyle HorizontalAlign="Center" />
                                    </asp:BoundField>
                                    <asp:BoundField DataField="DictValue" HeaderText="选中值">
                                        <ItemStyle HorizontalAlign="Center" />
                                        <HeaderStyle HorizontalAlign="Center" />
                                    </asp:BoundField>
                                    <asp:TemplateField HeaderText="编辑">
                                        <HeaderStyle HorizontalAlign="Center" />
                                        <EditItemTemplate>
                                            <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
                                        </EditItemTemplate>
                                        <ItemTemplate>
                                            <img src="../tab/images/edt.gif" width="16" height="16" />
                                            <asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl='<%# "Edit.aspx?act=edit&id="+Eval("DictionaryId") %>'>编辑</asp:HyperLink>
                                        </ItemTemplate>
                                        <ItemStyle HorizontalAlign="Center" />
                                    </asp:TemplateField>
                                </Columns>
                                <HeaderStyle CssClass="headbackground" BorderColor="#C1DAD7" />
                                <RowStyle BorderColor="#C1DAD7" Height="23px" />
                                <EmptyDataTemplate>
                                    不存在记录!
                                </EmptyDataTemplate>
</asp:GridView>
<asp:Button ID="btnDel" runat="server" CssClass="btnnoborder" OnClick="btnDel_Click"
                                                                        Text="删除" OnClientClick="return CheckItem('你确定删除选中项吗？')" />服务端cs页面:
protected void btnDel_Click(object sender, EventArgs e)
        {
            int i = 0;
            foreach (GridViewRow myItem in gvDictionary.Rows)
            {                CheckBox chkSel = (CheckBox)myItem.FindControl("chkDictionaryId");
                if (chkSel != null)
                {                    if (chkSel.Checked)
                    {
                        i = i + 1;
                        bll.Delete(int.Parse(gvDictionary.DataKeys[myItem.RowIndex][0].ToString()));
                    }
                }
            }
            if (i == 0)
            {
                Type csType = this.GetType();
                ClientScript.RegisterStartupScript(csType, "No choose Error", "<script language=JavaScript>alert('请选择要操作的项目!');</script>");
            }
            BindDictionary();
        }