通过表单中的所有HTML复选框环 [英] Loop through all html checkboxes in form

问题描述

我想通过我的表单中的所有HTML复选框能循环，如果它被选中做别的事情做别的事情。我也想这样做在code不使用任何JavaScript \\ jQuery的后面。

 ＆LT;表ID =form1的=服务器＆GT;
        ＆LT; ASP：标签ID =Label1的=服务器文本=标签＆GT;＆LT; / ASP：标签＆gt;
    ＆LT; D​​IV＆GT;
  ＆LT;表格的宽度=850BORDER =0的cellpadding =0CELLSPACING =10级=复制＆GT;
    ＆所述; TR＆GT;
      ＆LT; TD VALIGN =顶＆GT;＆LT;表格的宽度=200BORDER =0CELLSPACING =0的cellpadding =3的bgcolor =＃f0f4f8＆GT;
          ＆所述; TR＆GT;
            ＆LT; TD WIDTH =21＆GT;＆安培; NBSP;＆LT; / TD＆GT;
            ＆LT; TD WIDTH =179＆GT;＆LT;强＆GT;的CheckBox＆LT; / STRONG＆GT;＆LT; / TD＆GT;
          ＆LT; / TR＆GT;
          ＆所述; TR＆GT;
            ＆LT; TD＆GT;＆LT;输入=服务器类型=复选框NAME =checkbox1ID =checkbox1/＆GT;＆LT; / TD＆GT;
            ＆LT; TD＆GT; checkbox1＆LT; / TD＆GT;
          ＆LT; / TR＆GT;
          ＆所述; TR＆GT;
            ＆LT; TD＆GT;＆LT;输入=服务器类型=复选框NAME =checkbox2ID =checkbox2/＆GT;＆LT; / TD＆GT;
            ＆LT; TD＆GT; checkbox2＆LT; / TD＆GT;
          ＆LT; / TR＆GT;
          ＆所述; TR＆GT;
            ＆LT; TD＆GT;＆LT;输入=服务器类型=复选框NAME =checkbox3ID =checkbox3/＆GT;＆LT; / TD＆GT;
            ＆LT; TD＆GT; checkbox3＆LT; / TD＆GT;
          ＆LT; / TR＆GT;
        ＆LT; /表＆gt;
    ＆LT; / DIV＆GT;
        ＆LT; ASP：按钮的ID =Button1的=服务器的OnClick =的button1_Click文本=按钮/＆GT;
    ＆LT; /表及GT;
 

在codebehind我已经尝试了几种不同的方式，但我猜测，因为它是类型复选框它不工作的HTML输入控制

 的foreach（复选框CHK在Page.Form.Controls.OfType＆LT;＆复选框GT;（））
        {            如果（chk.Checked ==真）
            {
                Label1.Text =我们有复选框
            }
            其他
            {
                Label1.Text =仍然没有复选框
            }        }
 

解决方案

一对夫妇的方式：

 的foreach（在this.form1.Controls控制项）
{
    //我们只需要HtmlInputCheckBox
    System.Web.UI.HtmlControls.HtmlInputCheckBox _cbx =项目作为System.Web.UI.HtmlControls.HtmlInputCheckBox;
    如果（_cbx！= NULL）
    {
        如果（_cbx.Checked）
        {
            //做一点事：
            的Response.Write（_cbx.Name +被选中＆LT; BR /＆gt;中）;
        }
    }}
 

或

  //我们只需要HtmlInputCheckBox
IEnumerable的＆lt;控制＆GT; _ctrls =从控制n的this.form1.Controls，其中n为System.Web.UI.HtmlControls.HtmlInputCheckBox = NULL选择N！;如果（_ctrls.Count（）大于0）
{
    的foreach（在_ctrls System.Web.UI.HtmlControls.HtmlInputCheckBox项）
    {
        如果（item.Checked）
        {
            //做一点事：
            的Response.Write（item.Name +被选中＆LT; BR /＆GT;＆LT; BR /＆gt;中）;
        }
    }
}
 

希望这有助于....

I would like to be able loop through all the html checkboxes in my form and if it is checked do something else do something else. I also would like to do this in the code behind not using any Javascript\jquery.

<form id="form1" runat="server">
        <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
    <div>
  <table width="850" border="0" cellpadding="0" cellspacing="10" class="Copy" >
    <tr>
      <td valign="top"><table width="200" border="0" cellspacing="0" cellpadding="3" bgcolor="#f0f4f8">
          <tr>
            <td width="21">&nbsp;</td>
            <td width="179"><strong>CheckBoxes</strong></td>
          </tr>
          <tr>
            <td><input runat="server" type="checkbox" name="checkbox1" id="checkbox1" /></td>
            <td>checkbox1</td>
          </tr>
          <tr>
            <td><input runat="server" type="checkbox" name="checkbox2" id="checkbox2" /></td>
            <td>checkbox2</td>
          </tr>
          <tr>
            <td><input runat="server" type="checkbox" name="checkbox3" id="checkbox3" /></td>
            <td>checkbox3</td>
          </tr>
        </table>
    </div>
        <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" />
    </form>

In the codebehind I have tried a couple of different ways but i am guessing since it is an HTML Input control of type Checkbox it is not working

 foreach (CheckBox chk in Page.Form.Controls.OfType<CheckBox>())
        {

            if (chk.Checked == true)
            {
                Label1.Text = "we have checkboxes";
            }
            else
            {
                Label1.Text = "Still no checkboxes";
            }

        }

解决方案

A couple of ways:

foreach (Control item in this.form1.Controls)
{
    //We just need HtmlInputCheckBox 
    System.Web.UI.HtmlControls.HtmlInputCheckBox _cbx = item as System.Web.UI.HtmlControls.HtmlInputCheckBox;
    if (_cbx != null)
    {
        if (_cbx.Checked)
        {
            //Do something: 
            Response.Write(_cbx.Name + " was checked.<br />");
        }
    }

}

or

//We just need HtmlInputCheckBox
IEnumerable<Control> _ctrls = from Control n in this.form1.Controls where n as System.Web.UI.HtmlControls.HtmlInputCheckBox != null select n;

if (_ctrls.Count() > 0)
{
    foreach (System.Web.UI.HtmlControls.HtmlInputCheckBox item in _ctrls)
    {
        if (item.Checked)
        {
            //Do something:
            Response.Write(item.Name + " was checked.<br/><br />");
        }
    }
}

Hope this helps....

这篇关于通过表单中的所有HTML复选框环的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！