C# 如何在ASP.NET中以编程方式将HTML元素放入RangeValidator控件中？

如果我想从我的*.aspx静态创建RangeValidator，它将如下所示：

<asp:RangeValidator Type="Double" MinimumValue="0.00" MaximumValue="100.00" 
ID="rangeValidatorSomething" ControlToValidate="textBoxSomething" runat="server" 
Display="Dynamic" >
    <img src="../images/error.gif" alt="Validation error" title="Validation error" />
    This number should be between 0.00 and 100.00
</asp:RangeValidator>

RangeValidator dynamicRangeValidator = new RangeValidator();
dynamicRangeValidator.MinimumValue = "0.00";
dynamicRangeValidator.MaximumValue = "100.00";
dynamicRangeValidator.Type = ValidationDataType.Double;
...

---

我的问题是：应该如何实现RangeValidator控件中的图像和文本，如上面的*.aspx示例所示？

您可以使用控件添加方法来实现。像下面

HtmlImage hi = new HtmlImage();
// set other properties and attributes of image

RangeValidator dynamicRangeValidator = new RangeValidator();
dynamicRangeValidator.Controls.Add(hi);

---

您可以使用控件添加方法进行此操作。像下面

HtmlImage hi = new HtmlImage();
// set other properties and attributes of image

RangeValidator dynamicRangeValidator = new RangeValidator();
dynamicRangeValidator.Controls.Add(hi);

---

您可以使用控件添加方法进行此操作。像下面

HtmlImage hi = new HtmlImage();
// set other properties and attributes of image

RangeValidator dynamicRangeValidator = new RangeValidator();
dynamicRangeValidator.Controls.Add(hi);

---

您可以使用控件添加方法进行此操作。像下面

HtmlImage hi = new HtmlImage();
// set other properties and attributes of image

RangeValidator dynamicRangeValidator = new RangeValidator();
dynamicRangeValidator.Controls.Add(hi);

---

有关所需的字段验证器，请参见以下示例：

<asp:TextBox runat="server" ID="textValue"></asp:TextBox>
 <asp:RequiredFieldValidator runat="server" Text='<img src="error.png" />' ControlToValidate="textValue"></asp:RequiredFieldValidator>

---

有关所需的字段验证器，请参见以下示例：

<asp:TextBox runat="server" ID="textValue"></asp:TextBox>
 <asp:RequiredFieldValidator runat="server" Text='<img src="error.png" />' ControlToValidate="textValue"></asp:RequiredFieldValidator>

---

有关所需的字段验证器，请参见以下示例：

<asp:TextBox runat="server" ID="textValue"></asp:TextBox>
 <asp:RequiredFieldValidator runat="server" Text='<img src="error.png" />' ControlToValidate="textValue"></asp:RequiredFieldValidator>

---

有关所需的字段验证器，请参见以下示例：

<asp:TextBox runat="server" ID="textValue"></asp:TextBox>
 <asp:RequiredFieldValidator runat="server" Text='<img src="error.png" />' ControlToValidate="textValue"></asp:RequiredFieldValidator>