asp.net清空页面上的所有TextBox

Asp.net中一次性清空页面上的所有TextBox中的内容,由于TextBox在客户端以<input type=”text”>形式来呈现的，因此解决方案有客户端和服务器端两种方式,服务器端包括两种方法!这个破东西在asp.net面试题中广为流传（我感受颇深）.

方法一：

Code
 1foreach (Control c in this.FindControl("form1").Controls)
 2{
 3    if (c is TextBox)
 4    {
 5        ((TextBox)c).Text = "";
 6    }
 7}
 8
 9
10
 

方法二：

Code
1 FieldInfo[] infos = GetType().GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.GetField | BindingFlags.Instance);
2        for (int i = 0; i < infos.Length; i++)
3        {
4            if (infos[i].FieldType == typeof(TextBox))
5            {
6                ((TextBox)infos[i].GetValue(this)).Text = "";
7            }
8        }
 

方法三：（客户端事件）

Code
 1<script language="javascript" type="text/javascript">
 2        function ClearAllTextBox() {
 3            var obj = window.document.forms[0];
 4            for (i = 0; i < obj.elements.length; i++) {
 5                var elem = obj.elements[i];
 6                if (elem) {
 7                    if (elem.type == "text") {
 8                        elem.value = "";
 9                    }
10                } 
11            } 
12        }
13    </script>

今天偶做测试，把通用函数粘贴如下：

public void ClearTextBox(ControlCollection ControlArray)
        {
            foreach (Control c in ControlArray)
            {
                if (c.Controls.Count>0)
                {
                    ClearTextBox(c.Controls);
                }
                else
                {
                    if (c is TextBox)
                    {
                        ((TextBox)c).Text = "";
                    }
                    if (c is HtmlInputText)
                    {
                        ((HtmlInputText)c).Value = "";
                    }
                }
            }
        }