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按钮类型控件选择类型控件

<body>
    <form id="form1" runat="server">
    <div class="style1">
    
        <br />
        <br />
        <asp:ListBox ID="lblist" runat="server" Height="115px" Width="104px" 
            SelectionMode="Multiple">
        </asp:ListBox>
        <asp:Button ID="btnAdd" runat="server" onclick="btnAdd_Click" Text="添加" />
        <asp:Button ID="btnDel" runat="server" Text="移除" />
        <asp:ListBox ID="lbStat" runat="server" Height="116px" style="margin-top: 0px" 
            Width="100px"></asp:ListBox>
            </div>
    </form>
</body><body>
    <form id="form1" runat="server">
    <div class="style1">
    
        <br />
        <br />
        <asp:ListBox ID="lblist" runat="server" Height="115px" Width="104px" 
            SelectionMode="Multiple">
        </asp:ListBox>
        <asp:Button ID="btnAdd" runat="server" onclick="btnAdd_Click" Text="添加" />
        <asp:Button ID="btnDel" runat="server" Text="移除" />
        <asp:ListBox ID="lbStat" runat="server" Height="116px" style="margin-top: 0px" 
            Width="100px"></asp:ListBox>
           
    </div>
    </form>
</body><body>
    <form id="form1" runat="server">
    <div class="style1">
    
        <asp:ListBox ID="lblist" runat="server" Height="115px" Width="104px" 
            SelectionMode="Multiple">
        </asp:ListBox>
        <asp:Button ID="btnAdd" runat="server" onclick="btnAdd_Click" Text="添加" />
        <asp:Button ID="btnDel" runat="server" Text="移除" />
        <asp:ListBox ID="lbStat" runat="server" Height="116px" style="margin-top: 0px" 
            Width="100px"></asp:ListBox>
           
    </div>
    </form>
</body><body>
    <form id="form1" runat="server">
    <div class="style1">
    
       
        <asp:ListBox ID="lblist" runat="server" Height="115px" Width="104px" 
            SelectionMode="Multiple">
        </asp:ListBox>
        <asp:Button ID="btnAdd" runat="server" onclick="btnAdd_Click" Text="添加" />
        <asp:Button ID="btnDel" runat="server" Text="移除" />
        <asp:ListBox ID="lbStat" runat="server" Height="116px" style="margin-top: 0px" 
            Width="100px"></asp:ListBox>
              </div>
    </form>
</body><body>
    <form id="form1" runat="server">
    <div class="style1">
    
        <asp:ListBox ID="lblist" runat="server" Height="115px" Width="104px" 
            SelectionMode="Multiple">
        </asp:ListBox>
        <asp:Button ID="btnAdd" runat="server" onclick="btnAdd_Click" Text="添加" />
        <asp:Button ID="btnDel" runat="server" Text="移除" />
        <asp:ListBox ID="lbStat" runat="server" Height="116px" style="margin-top: 0px" 
            Width="100px"></asp:ListBox>
      
    </div>
    </form>
</body>

后台：

protected void Page_Load(object sender, EventArgs e)
    {
        AddUser();

    }
    private void AddUser()
    {
        lblist.Items.Add("11");
        lblist.Items.Add("22");
        lblist.Items.Add("33");
        lblist.Items.Add("44");
        lblist.Items.Add("55");
        lblist.Items.Add("66");
    }
    protected void btnAdd_Click(object sender, EventArgs e)
    {
        for (int i = 0; i <lblist.Items.Count; i++)
        {
            if (lblist.Items[i].Selected)
            {
                ListItem li = lbStat.Items.FindByValue(lblist.Items[i].Text);
                if (li == null)
                {
                    lbStat.Items.Add(lblist.Items[i].Text);
                }
            }
        }
        lblist.ClearSelection();//清除项目中的选中状态
    }
 protected void btnDel_Click(object sender, EventArgs e)
    {
        for (int i = 0; i < lbStat.Items.Count; i++)
        {
            if (lbStat.Items[i].Selected)
            {
                lbStat.Items.RemoveAt(i);
            }
            lblist.ClearSelection();
        }
    }

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原文地址：https://www.cnblogs.com/qiushuixizhao/p/3310083.html

按钮类型控件 选择类型控件

按钮类型控件选择类型控件