清空页面上的所有TextBox中的文本

[zizilovejava]

protected void Condition(Control ctrl)
{
for (int i = 0; i < this.Controls[1].Controls.Count; i++)
{
if (this.Controls[1].Controls[i] is TextBox)
{
((TextBox)this.Controls[1].Controls[i]).Text = "";
}
}
}

protected void Button2_Click(object sender, EventArgs e)
{
Condition(this);
}

清空不了呀

[FlyBee]

foreach (System.Windows.Forms.Control control in this.Controls)
            {
                if (control is System.Windows.Forms.TextBox)
                {
                    System.Windows.Forms.TextBox tb = (System.Windows.Forms.TextBox)control;
                    tb.Text = "";
                }
            } 

[PandaIT]

foreach (Control Ctrol in this.Controls) 
{ 
if (Ctrol is TextBox) 
{ 
Ctrol.Text = ""; 
} 
} 

[FlyBee]

 protected void Condition()
        {
            foreach (System.Windows.Forms.Control control in this.Controls)
            {
                if (control is System.Windows.Forms.TextBox)
                {
                    System.Windows.Forms.TextBox tb = (System.Windows.Forms.TextBox)control;
                    tb.Text = "";
                }
            }
        }

 protected void Button2_Click(object sender, EventArgs e) 
    { 
        Condition(this); 
    } 

[gciyfzx07]

protected void Condition(Control ctrl)
{
for (int i = 0; i < this.Controls[1].Controls.Count; i++)
{
if (Typeof(this.Controls[1].Controls[i]) is TextBox)
{
((TextBox)this.Controls[1].Controls[i]).Text = "";
}
}
}

[levinstong]

((TextBox)this.Controls[1].Controls[i]).Text = string.Empty ; 

把改在这样试试看

[FlyBee]

[Quote=引用 3 楼 YxFlyBee 的回复:]
protected void Button2_Click(object sender, EventArgs e)
{
Condition(this);
} [/Quote]
Condition(); this不要复制错了

[zgke]

private void button2_Click(object sender, EventArgs e)
{
Condition();
}

protected void Condition()
{
foreach (Control _Control in this.Controls)
{
Condition(_Control);
}

}

protected void Condition(Control p_Control)
{
if (p_Control is TextBox)
{
p_Control.Text = "";
return;
}
foreach (Control _Control in p_Control.Controls)
{
Condition(_Control);
}
}

这样看看.

[A海阔天空]

稍微一下设置为空就可以了

//设置界面上控件的Enable为false,并且设置TextBox的边框样式
  public static void SetChildControlsReadOnlyPropertyAndBorderStyle(Control parentControl, bool isReadOnly )       {
            int i;
            DropDownList tempDropDownList;
            TextBox tempTextBox;
            CheckBox tempCheckBox;
            if (parentControl == null) return;
            for (i = 0; i < parentControl.Controls.Count; i++)
            {
                if (parentControl.Controls[i].GetType().Name == "TextBox")
                {
                    tempTextBox = (TextBox)parentControl.Controls[i];
                    tempTextBox.ReadOnly = isReadOnly;
                    tempTextBox.ForeColor = Color.Black;
                }
                if (parentControl.Controls[i].GetType().Name == "DropDownList")
                {
                    tempDropDownList = (DropDownList)parentControl.Controls[i];
                    tempDropDownList.Enabled = !isReadOnly;
                }
                if (parentControl.Controls[i].GetType().Name == "CheckBox")
                {
                    tempCheckBox = (CheckBox)parentControl.Controls[i];
                    tempCheckBox.Enabled = !isReadOnly;
                }
            }
        }

[harderLi]

Condition(Page);

[xlsdan]

   
 protected void Condition()
    {  
        foreach (Control c in this.FindControl("form1").Controls)
        {

            if (c is TextBox)
            {

                ((TextBox)c).Text = "";

            }

        }

    }
protected void Button2_Click(object sender, EventArgs e)
    {
        Condition();
    }

[zzxap]

[code=C#]
public static void TextClear(System.Web.UI.Page p)
{
string js;
js ="< language='java'>";
js +="var mm = getElementsByTagName('input').length ;";
js +="for(var i=0;i<mm;i++)";
js +="{";
js += "var dd = getElementsByTagName('input').item(i);";
js += "if(dd.type == 'text')";
js += "{";
js += "dd.='';";
js += "}";
js +="}";
js +="</scr"+"ipt>";
p.RegisterStartup("ms",js);
}
[/CODE]

[zizilovejava]

To YxFlyBee

产生System.InvalidCastException异常
无法将类型为“ASP.masterpage_master”的对象强制转换为类型“System.Windows.Forms.Control”。

[lijianqiang]

Condition(this); 这样写不对
改成 Condition(this. Controls);