文本框项目未删除

Question

我有1）文本提交 2）下拉列表 3）列表框

我为下拉列表选择值编写代码添加列表框和文本字段，我可以删除列表框值但不能删除文本字段值，请如何编写代码删除文本字段的相同添加值和列表框

 <div class="col-sm-3">
                                            <asp:TextBox ID="txtQlt" runat="server" CssClass="form-control" Width="348px" OnTextChanged="txtQlt_TextChanged" ReadOnly="true"></asp:TextBox>


                                        </div><div class="col-md-1" style="margin-left:115px;">
                    <asp:Label ID="Label4" runat="server" ForeColor="Red" Text="*" ></asp:Label>
                        </div>   
                                    </div>

                                    <br />
                                       <div class="row">
                                        <div class="col-sm-2">

                                            <asp:Label ID="Label6" runat="server" Text="Quality reference"  Font-Bold="True" Font-Names="arial, helvetica, sans-serif" Font-Size="13px"></asp:Label>
                                        </div>
                                        <div class="col-sm-3">
                                        <asp:DropDownList ID ="cmbQualityRef" runat ="server" CssClass="form-control" Width="250px" >

                                        </asp:DropDownList>
                                        <asp:ListBox  ID="lstValue" runat="server" CssClass="content" Rows="5" ValidationGroup="save"
                                            Width="250"  ></asp:ListBox>

                                        </div>
                                    <asp:ImageButton  ID="btnAdd" runat="server" CssClass="button" Text="Add" ValidationGroup="add"
                                            OnClick="btnAdd_Click"  ImageUrl="~/img/Add.png"/>

                                           <asp:ImageButton   ID="btnImageRemove" runat="server" OnClick="btnImageRemove_Click"
                                                         ImageUrl="~/img/Remove.png" /> 

                                            <div class="col-md-1" style="margin-left:16px;">
                    <asp:Label ID="Label7" runat="server" ForeColor="Red" Text="*" ></asp:Label>
                        </div>   
                                    </div>

代码背后

protected void btnImageRemove_Click(object sender, ImageClickEventArgs e)
        {
            try
            {

                if (lstValue.SelectedItem != null)
                {
                    lstValue.Items.Remove(lstValue.SelectedItem);
                }
                //lstValue.Items.Remove(lstValue.SelectedItem.Text);


            }
            catch (Exception)
            {


            }
        }

private void AddToList()
{





    if (lstValue.Items.Count > 0)
    {

        txtQlt.Text = txtQlt.Text + "," + cmbQualityRef.SelectedItem.ToString();
    }
    else
    {
        txtQlt.Text = cmbQualityRef.SelectedItem.ToString();
    }


    ListItem itm = new ListItem();
    itm.Value = cmbQualityRef.SelectedValue;
    itm.Text = cmbQualityRef.SelectedItem.ToString();

    lstValue.Items.Add(itm);
    lstValue.Items.Remove("");

}

protected void btnAdd_Click(object sender, EventArgs e)
        {

            AddToList();






                    lstValue.Items.Remove("");





        }

Answer 1

根据我理解的问题，当您删除所选项目时，还要将文本框设置为空。

function SliderCtrl($) {
  var self = this;
  
  self.slider = $('#slider');
  self.imgs = $('img', self.slider);
  self.current = null;
  self.ACTIVE_CLASS = 'is-active';
  self.TIMING = 2000;
  
  self.changeSlide = function() {
    var current = $(self.current);
    var next = current.next().length ? current.next() : self.imgs.first();
    console.log(next, current)
    
        
    current.removeClass(self.ACTIVE_CLASS);
    next.addClass(self.ACTIVE_CLASS);
    self.current = next;
  };
  
  window.setInterval(self.changeSlide, self.TIMING);
  self.slider.removeClass('is-waiting');
}
$(document).ready(SliderCtrl);

Answer 2

最后它的工作

if (lstValue.SelectedItem != null)
            {
                txtQlt.Text = txtQlt.Text.Replace(lstValue.SelectedItem.ToString(), "").Trim();
                lstValue.Items.Remove(lstValue.SelectedItem);
            }