ASP.NET遍历textbox文本框

Asp.Net如何遍历所有TextBox控件并清空

asp.net 不能像window那样直接遍历this.Controls就可以了，因为：

1. this.Controls只是包含了Page根一级的control，这样次级的control就都没有遍历
2. TextBox一般会放在form里面，遍历this.Controls只会访问form control，而不会访问form的子Contorl

下面使用递归对页面control树进行完全遍历

private void ResetTextBox(ControlCollection cc)
    {
        foreach (Control ctr in cc)
        {
            if (ctr.HasControls())
            {
                ResetTextBox(ctr.Controls);
            }
            if (ctr is TextBox)
            {
                ((TextBox)ctr).Text = string.Empty;
            }
        }
    }

调用

ResetTextBox(this.Controls);

/// <summary>
/// 清空textBox
/// </summary>
/// <param name="ParentControl"></param>
public static void GetChildControlClear(Control ParentControl)
{
if (ParentControl.HasControls())
{
foreach (Control ctl in ParentControl.Controls)
{
if(ctl.GetType().ToString() == "System.Web.UI.WebControls.TextBox")
{
((System.Web.UI.WebControls.TextBox)ctl).Text = "";
}
GetChildControlClear(ctl);
}
}
}

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        }

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>

引用至：http://hi.baidu.com/cuicanrensheng/item/f89eef9d735f59c9b725318e