ASP.NET自定义控件组件开发 第二章 继承WebControl的自定义控件
第二章 继承于WebControl的自定义控件
到现在为止,我已经写了三篇关于自定义控件开发的文章,很感谢大家的支持!不知道大家对我讲的方式有什么好的建议,我尽量使自定义控件的技术让更多的程序员同胞接受。好了,开发开始了!
系列文章链接:
ASP.NET自定义控件组件开发 第二章 继承WebControl的自定义控件
ASP.NET自定义控件组件开发 第三章 为控件添加事件 前篇
ASP.NET自定义控件组件开发 第三章 为控件添加事件 后篇
ASP.NET自定义控件组件开发 第四章 组合控件开发CompositeControl
ASP.NET自定义控件组件开发 第四章 组合控件开发CompositeControl 后篇 --事件冒泡
本章还是延续上章的例子,开发一个CreditCardForm控件。
其实本章也不难,相信大家看完后,也觉得很简单!
我们首先开谈谈继承Control和WebControl的区别:其实二者最大的区别就是在,如果我们开发的控件继承WebControl,那么我们的控件就支持更多的CSS样式。而继承于Control的自定义控件的样式相对就少些。
其实还有一个区别就在开发的规范上。我们来简单的看看上一章的自定义控件的代码,主要来看看Render方法中的代码:大家只扫一眼就可以了。
1 protected override void Render(HtmlTextWriter writer)
2 {
3 //显示table标记
4 writer.AddStyleAttribute(HtmlTextWriterStyle.Width, "287px");
5 writer.AddStyleAttribute(HtmlTextWriterStyle.Height, "128px");
6 writer.AddStyleAttribute(HtmlTextWriterStyle.BorderWidth, "0");
7 writer.AddAttribute(HtmlTextWriterAttribute.Id, "mytable");
8 writer.RenderBeginTag(HtmlTextWriterTag.Table);
9
10 //显示table类的标记 包含 tr ,td 还有一些textbox,下拉框等
11 writer.RenderBeginTag(HtmlTextWriterTag.Tr);
12
13 writer.RenderBeginTag(HtmlTextWriterTag.Td);
14 writer.Write(PaymentMethodText);
15 writer.RenderEndTag();
16
17 writer.RenderBeginTag(HtmlTextWriterTag.Td);
18 writer.AddAttribute(HtmlTextWriterAttribute.Name, "PaymentMethod");
19 writer.AddAttribute(HtmlTextWriterAttribute.Id, "PaymentMethod");
20 writer.AddStyleAttribute(HtmlTextWriterStyle.Width, "100%");
21 writer.RenderBeginTag(HtmlTextWriterTag.Select);
22
23 writer.AddAttribute(HtmlTextWriterAttribute.Value, "0");
24 writer.RenderBeginTag(HtmlTextWriterTag.Option);
25 writer.Write("Master");
26 writer.RenderEndTag();
27
28 writer.AddAttribute(HtmlTextWriterAttribute.Value, "1");
29 writer.RenderBeginTag(HtmlTextWriterTag.Option);
30 writer.Write("Visa");
31 writer.RenderEndTag();
32
33 writer.RenderEndTag();
34 writer.RenderEndTag();
35 writer.RenderEndTag();
36
37 writer.RenderBeginTag(HtmlTextWriterTag.Tr);
38 writer.RenderBeginTag(HtmlTextWriterTag.Td);
39 writer.Write(CreditCardNoText);
40 writer.RenderEndTag();
41
42 writer.RenderBeginTag(HtmlTextWriterTag.Td);
43 writer.AddAttribute(HtmlTextWriterAttribute.Type, "text");
44 writer.AddAttribute(HtmlTextWriterAttribute.Name, "CreditCardNo");
45 writer.AddAttribute(HtmlTextWriterAttribute.Id, "CreditCardNo");
46 writer.RenderBeginTag(HtmlTextWriterTag.Input);
47 writer.RenderEndTag();
48 writer.RenderEndTag();
49 writer.RenderEndTag();
50
51 writer.RenderBeginTag(HtmlTextWriterTag.Tr);
52 writer.RenderBeginTag(HtmlTextWriterTag.Td);
53 writer.Write(CardholderNameText);
54 writer.RenderEndTag();
55
56 writer.RenderBeginTag(HtmlTextWriterTag.Td);
57 writer.AddAttribute(HtmlTextWriterAttribute.Type, "text");
58 writer.AddAttribute(HtmlTextWriterAttribute.Name, "CardholderName");
59 writer.AddAttribute(HtmlTextWriterAttribute.Id, "CardholderName");
60 writer.RenderBeginTag(HtmlTextWriterTag.Input);
61 writer.RenderEndTag();
62 writer.RenderEndTag();
63 writer.RenderEndTag();
64
65 writer.RenderBeginTag(HtmlTextWriterTag.Tr);
66 writer.RenderBeginTag(HtmlTextWriterTag.Td);
67 writer.Write(ExpirationDateText);
68 writer.RenderEndTag();
69
70 writer.RenderBeginTag(HtmlTextWriterTag.Td);
71 writer.AddAttribute(HtmlTextWriterAttribute.Name, "Month");
72 writer.AddAttribute(HtmlTextWriterAttribute.Id, "Month");
73 writer.RenderBeginTag(HtmlTextWriterTag.Select);
74 for (int month = 1; month < 13; month++)
75 {
76 writer.AddAttribute(HtmlTextWriterAttribute.Value, month.ToString());
77 writer.RenderBeginTag(HtmlTextWriterTag.Option);
78 writer.Write(month.ToString());
79 writer.RenderEndTag();
80 }
81
82 writer.RenderEndTag();
83
84 writer.Write(" ");
85
86 writer.AddAttribute(HtmlTextWriterAttribute.Name, "Year");
87 writer.AddAttribute(HtmlTextWriterAttribute.Id, "Year");
88 writer.RenderBeginTag(HtmlTextWriterTag.Select);
89
90 for (int year =2008; year < 2015; year++)
91 {
92 writer.AddAttribute(HtmlTextWriterAttribute.Value, year.ToString());
93 writer.RenderBeginTag(HtmlTextWriterTag.Option);
94 writer.Write(year.ToString());
95 writer.RenderEndTag();
96 }
97
98 writer.RenderEndTag();
99
100 writer.RenderEndTag();
101 writer.RenderEndTag();
102
103
104 writer.RenderBeginTag(HtmlTextWriterTag.Tr);
105 writer.AddAttribute(HtmlTextWriterAttribute.Colspan, "2");
106 writer.AddAttribute(HtmlTextWriterAttribute.Align, "center");
107 writer.RenderBeginTag(HtmlTextWriterTag.Td);
108 writer.AddAttribute(HtmlTextWriterAttribute.Type, "submit");
109 writer.AddAttribute(HtmlTextWriterAttribute.Value, SubmitButtonText);
110 writer.RenderBeginTag(HtmlTextWriterTag.Input);
111 writer.RenderEndTag();
112 writer.RenderEndTag();
113 writer.RenderEndTag();
114
115 //table的结束标记
116 writer.RenderEndTag();
117
118
119
120
121 }
相信这段代码大家都和熟悉。在这段代码的作用主要显示了一个table 以及table 之中的标记元素。
如果一这个控件已经写好了,加入我们想要改改table的样式,如把border设为1,或者改变显示的颜色等,那么我们就
要再次打开这段代码,修改代码。其实这就不好。为什么?
其实这个方法中的代码做了四件事:
1.显示控件最外层的包含标记,即table
2.显示最外层标记的一些属性,如border.id等
3.显示控件的主要内容 ,如,显示输入框,下拉框,按钮。
4.显示控件最外层包含标记的结束标记。
这样看来,这个方法的职责就有四个。大家应该还记得面向对象设计的原创:单一职责。虽然这个元素一般用在类上,
但是我们更加要注意,这个原则用的宗旨:使对象只有一个变化的因素。这个原则也用在方法的设计上。
就是说,我们如果想要改变最外层标记table一些属性,我们就影响了其他三个职责。同理,我们想改变其他的元素或者
内容,结果可想而知。
为此,继承WebControl的控件就更加的规范和灵活:
其实,继承于WebControl的控件的显示还是在Render方法中显示,只是这个Render方法已经不由我们来写了:
如下:
1
2 protected override void Render(HtmlTextWriter writer)
3 {
4 RenderBeginTag(writer);
5 RenderContens(writer);
6 RenderEndTag(writer);
7
8 }
因为我们之前说,Render方法的职责有四个。所以WebControl的Render方法就把这些职责分离了。以后我们能就
可以独立的改变一个因素了。大家也许奇怪:不是说有四个职责吗,但是上面只是显示了三个方法,其实在
RenderBeginTag()方法中包含显示最外层标记样式的方法。
所以我们只要分别重写这三个方法,一个继承WebControl的自定义的控件就成了。不要怕,方法很多,但是很简单,而
且代码我们都懂,之前差不多都讲了的。
我想把写成后的控件给大家看看,让大家看下我们本章的目标:
大家看见没有:是不是支持的样式多了!!!
好了,我们来写吧:不难哦:)
首先看看我们要的写方法以及他们的功能:
protected override void Render(HtmlTextWriter writer)
{
//显示最外层包含标记开始的标记,即,显示<table ..>
RenderBeginTag(writer);
//显示table标记内的内容,如<tr><td><input />等
RenderContens(writer);
//显示最外层包含标记结束标记</table
RenderEndTag(writer);
}
现在的思路很清晰吧,首先来显示<table....>
很简单,只要如下就可以了。
1 protected override HtmlTextWriterTag TagKey
2 {
3 get
4 {
5 return HtmlTextWriterTag.Table;
6 }
7 }
不要奇怪,因为RenderBeginTag()方法内部实际是调用了这个属性来显示的最外层的包含标记的。
好了,第一步就写完了啊!简答吧!
下面来显示table的样式,因为我们的控件的最外层的标记是table,显示他的样式只要这样就OK了。
1 protected override Style CreateControlStyle()
2 {
3 return new TableStyle(ViewState);
4 }
又写完了一部分。。不难吧!接着看啊!
如果你的最外层的标记是<div >那么,上面的那个方法你都不用写.
下面就写了RenderContent方法,不难,只记住这个方法的职责:显示最外层标记的内容:
如下:
1 protected override void RenderContents(HtmlTextWriter writer)
2 {
3 writer.RenderBeginTag(HtmlTextWriterTag.Tr);
4 writer.RenderBeginTag(HtmlTextWriterTag.Td);
5 writer.Write(PaymentMethod);
6 writer.RenderEndTag();
7
8 writer.RenderBeginTag(HtmlTextWriterTag.Td);
9
10 writer.AddAttribute(HtmlTextWriterAttribute.Id, PaymentMethodListId);
11 writer.AddAttribute(HtmlTextWriterAttribute.Name, PaymentMethodListName);
12 writer.AddStyleAttribute(HtmlTextWriterStyle.Width, "100%");
13 writer.RenderBeginTag(HtmlTextWriterTag.Select);
14
15 writer.AddAttribute(HtmlTextWriterAttribute.Value, "0");
16 writer.RenderBeginTag(HtmlTextWriterTag.Option);
17 writer.Write("Master");
18 writer.RenderEndTag();
19
20 writer.AddAttribute(HtmlTextWriterAttribute.Value, "1");
21 writer.RenderBeginTag(HtmlTextWriterTag.Option);
22 writer.Write("Visa");
23 writer.RenderEndTag();
24
25 writer.RenderEndTag();
26
27 writer.RenderEndTag();
28 writer.RenderEndTag();
29 //****************************************************************************
30 writer.RenderBeginTag(HtmlTextWriterTag.Tr);
31 writer.RenderBeginTag(HtmlTextWriterTag.Td);
32 writer.Write(CreditCardNo);
33 writer.RenderEndTag();
34
35 writer.RenderBeginTag(HtmlTextWriterTag.Td);
36 writer.AddAttribute(HtmlTextWriterAttribute.Id, CreditCardNoTextId);
37 writer.AddAttribute(HtmlTextWriterAttribute.Name, CreditCardNoTextName);
38 writer.AddAttribute(HtmlTextWriterAttribute.Type, "text");
39 writer.RenderBeginTag(HtmlTextWriterTag.Input);
40 writer.RenderEndTag();
41
42 writer.RenderEndTag();
43 writer.RenderEndTag();
44 //**************************************************************************************
45
46 writer.RenderBeginTag(HtmlTextWriterTag.Tr);
47 writer.RenderBeginTag(HtmlTextWriterTag.Td);
48 writer.Write(CardholderName);
49 writer.RenderEndTag();
50
51 writer.RenderBeginTag(HtmlTextWriterTag.Td);
52 writer.AddAttribute(HtmlTextWriterAttribute.Name, CardholderNameTextName);
53 writer.AddAttribute(HtmlTextWriterAttribute.Id, CardholderNameTextId);
54 writer.AddAttribute(HtmlTextWriterAttribute.Type, "text");
55 writer.RenderBeginTag(HtmlTextWriterTag.Input);
56 writer.RenderEndTag();
57
58 writer.RenderEndTag();
59 writer.RenderEndTag();
60 //***************************************************************************************
61
62 writer.RenderBeginTag(HtmlTextWriterTag.Tr);
63 writer.RenderBeginTag(HtmlTextWriterTag.Td);
64 writer.Write(ExpirationDate);
65 writer.RenderEndTag();
66
67 writer.RenderBeginTag(HtmlTextWriterTag.Td);
68 writer.AddAttribute(HtmlTextWriterAttribute.Name, MonthListName);
69 writer.AddAttribute(HtmlTextWriterAttribute.Id, MonthListId);
70 writer.RenderBeginTag(HtmlTextWriterTag.Select);
71
72 for (int month = 1; month < 13; month++)
73 {
74 writer.AddAttribute(HtmlTextWriterAttribute.Value, month.ToString());
75 writer.RenderBeginTag(HtmlTextWriterTag.Option);
76 writer.Write(month.ToString());
77 writer.RenderEndTag();
78 }
79 writer.RenderEndTag();
80
81 /////////////////////////////////////
82
83 writer.Write(" ");
84
85 /////////////////////////////////////
86 writer.AddAttribute(HtmlTextWriterAttribute.Name, YearListName);
87 writer.AddAttribute(HtmlTextWriterAttribute.Id, YearListId);
88 writer.RenderBeginTag(HtmlTextWriterTag.Select);
89
90 for (int year = 2008; year < 2015; year++)
91 {
92 writer.AddAttribute(HtmlTextWriterAttribute.Value, year.ToString());
93 writer.RenderBeginTag(HtmlTextWriterTag.Option);
94 writer.Write(year.ToString());
95 writer.RenderEndTag();
96 }
97 writer.RenderEndTag();
98
99 writer.RenderEndTag();
100 writer.RenderEndTag();
101 //*****************************************************************************
102
103 writer.RenderBeginTag(HtmlTextWriterTag.Tr);
104 writer.AddAttribute(HtmlTextWriterAttribute.Colspan, "2");
105 writer.AddAttribute(HtmlTextWriterAttribute.Align, "center");
106 writer.RenderBeginTag(HtmlTextWriterTag.Td);
107 writer.AddAttribute(HtmlTextWriterAttribute.Name, SubmitButtonName);
108 writer.AddAttribute(HtmlTextWriterAttribute.Value, SubmitButtonText);
109 writer.AddAttribute(HtmlTextWriterAttribute.Id, SubmitButtonId);
110 writer.AddAttribute(HtmlTextWriterAttribute.Type, "submit");
111 writer.RenderBeginTag(HtmlTextWriterTag.Input);
112 writer.RenderEndTag();
113
114 writer.RenderEndTag();
115 writer.RenderEndTag();
116
117 //******************************************************************************
118
119
120 }
这样就完了,大家看看上面的代码,很熟悉吧,是啊,只是把我们之前的代码分割开了,写在不同的地方!
最后的那个RendEndTag(),你不写!因为,你override那个TagKey时,就已经调用了结束标记的方法。这样,一个继承WebControl的控件就完了!
好了,写完了:完整的代码如下:
1 using System;
2 using System.Collections.Generic;
3 using System.Text;
4 using System.Web;
5 using System.Web.UI;
6 using System.Web.UI.WebControls;
7
8 namespace CreditCardForm
9 {
10 public class CreditCardForm5:WebControl
11 {
12 #region 重写包含标记
13
14 protected override Style CreateControlStyle()
15 {
16 return new TableStyle(ViewState);
17 }
18
19 protected override HtmlTextWriterTag TagKey
20 {
21 get
22 {
23 return HtmlTextWriterTag.Table;
24 }
25 }
26
27 //public virtual string BackImageUrl
28 //{
29 // get
30 // {
31 // return ((TableStyle)ControlStyle).BackImageUrl;
32 // }
33 // set
34 // {
35 // ((TableStyle)ControlStyle).BackImageUrl = value;
36 // }
37 //}
38
39
40 #endregion
41 #region ID
42 protected virtual string PaymentMethodListId
43 {
44 get
45 {
46 return "PaymentMethod";
47 }
48 }
49
50 protected virtual string CreditCardNoTextId
51 {
52 get
53 {
54 return "CreditCardNo";
55 }
56 }
57
58 protected virtual string CardholderNameTextId
59 {
60 get
61 {
62 return "CardholderName";
63 }
64 }
65
66 protected virtual string MonthListId
67 {
68 get
69 {
70 return "Month";
71 }
72 }
73
74 protected virtual string YearListId
75 {
76 get
77 {
78 return "Year";
79 }
80 }
81
82 protected virtual string SubmitButtonId
83 {
84 get
85 {
86 return "Submit";
87 }
88 }
89
90 #endregion
91 #region name
92 protected virtual string PaymentMethodListName
93 {
94 get
95 {
96 return "PaymentMethod";
97 }
98 }
99
100 protected virtual string CreditCardNoTextName
101 {
102 get
103 {
104 return "CreditCardNo";
105 }
106 }
107
108 protected virtual string CardholderNameTextName
109 {
110 get
111 {
112 return "CardholderName";
113 }
114 }
115
116 protected virtual string MonthListName
117 {
118 get
119 {
120 return "Month";
121 }
122 }
123
124 protected virtual string YearListName
125 {
126 get
127 {
128 return "Year";
129 }
130 }
131
132 protected virtual string SubmitButtonName
133 {
134 get
135 {
136 return "Sumit";
137 }
138 }
139 #endregion
140
141 #region 属性
142 public virtual string PaymentMethod
143 {
144 get
145 {
146 return ViewState["PaymentMethod"] != null ? (string)ViewState["PaymentMethod"] : "支付方式";
147
148 }
149 set
150 {
151 ViewState["PaymentMethod"] = value;
152 }
153 }
154
155 public virtual string CreditCardNo
156 {
157 get
158 {
159 return ViewState["CreditCardNo"] != null ? (string)ViewState["CreditCardNo"] : "信用卡号";
160 }
161 set
162 {
163 ViewState["CreditCardNo"] = value;
164 }
165 }
166
167 public virtual string CardholderName
168 {
169 get
170 {
171 return ViewState["CardholderName"] != null ? (string)ViewState["CardholderName"] : "持卡人";
172 }
173 set
174 {
175 ViewState["CreditCardName"] = value;
176 }
177 }
178
179 public virtual string ExpirationDate
180 {
181 get
182 {
183 return ViewState ["ExpirationDate"]!=null ?(string)ViewState ["ExpirationDate"]:"过期时间";
184 }
185 set
186 {
187 ViewState["ExpirationDate"] = value;
188 }
189 }
190
191 public virtual string SubmitButtonText
192 {
193 get
194 {
195 return ViewState["SubmitButtonText"] != null ? (string)ViewState["SubmitButtonText"] : "提交";
196 }
197 set
198 {
199 ViewState["SubmitButtonText"] = value;
200 }
201
202 }
203 #endregion
204 protected override void RenderContents(HtmlTextWriter writer)
205 {
206 writer.RenderBeginTag(HtmlTextWriterTag.Tr);
207 writer.RenderBeginTag(HtmlTextWriterTag.Td);
208 writer.Write(PaymentMethod);
209 writer.RenderEndTag();
210
211 writer.RenderBeginTag(HtmlTextWriterTag.Td);
212
213 writer.AddAttribute(HtmlTextWriterAttribute.Id, PaymentMethodListId);
214 writer.AddAttribute(HtmlTextWriterAttribute.Name, PaymentMethodListName);
215 writer.AddStyleAttribute(HtmlTextWriterStyle.Width, "100%");
216 writer.RenderBeginTag(HtmlTextWriterTag.Select);
217
218 writer.AddAttribute(HtmlTextWriterAttribute.Value, "0");
219 writer.RenderBeginTag(HtmlTextWriterTag.Option);
220 writer.Write("Master");
221 writer.RenderEndTag();
222
223 writer.AddAttribute(HtmlTextWriterAttribute.Value, "1");
224 writer.RenderBeginTag(HtmlTextWriterTag.Option);
225 writer.Write("Visa");
226 writer.RenderEndTag();
227
228 writer.RenderEndTag();
229
230 writer.RenderEndTag();
231 writer.RenderEndTag();
232 //****************************************************************************
233 writer.RenderBeginTag(HtmlTextWriterTag.Tr);
234 writer.RenderBeginTag(HtmlTextWriterTag.Td);
235 writer.Write(CreditCardNo);
236 writer.RenderEndTag();
237
238 writer.RenderBeginTag(HtmlTextWriterTag.Td);
239 writer.AddAttribute(HtmlTextWriterAttribute.Id, CreditCardNoTextId);
240 writer.AddAttribute(HtmlTextWriterAttribute.Name, CreditCardNoTextName);
241 writer.AddAttribute(HtmlTextWriterAttribute.Type, "text");
242 writer.RenderBeginTag(HtmlTextWriterTag.Input);
243 writer.RenderEndTag();
244
245 writer.RenderEndTag();
246 writer.RenderEndTag();
247 //**************************************************************************************
248
249 writer.RenderBeginTag(HtmlTextWriterTag.Tr);
250 writer.RenderBeginTag(HtmlTextWriterTag.Td);
251 writer.Write(CardholderName);
252 writer.RenderEndTag();
253
254 writer.RenderBeginTag(HtmlTextWriterTag.Td);
255 writer.AddAttribute(HtmlTextWriterAttribute.Name, CardholderNameTextName);
256 writer.AddAttribute(HtmlTextWriterAttribute.Id, CardholderNameTextId);
257 writer.AddAttribute(HtmlTextWriterAttribute.Type, "text");
258 writer.RenderBeginTag(HtmlTextWriterTag.Input);
259 writer.RenderEndTag();
260
261 writer.RenderEndTag();
262 writer.RenderEndTag();
263 //***************************************************************************************
264
265 writer.RenderBeginTag(HtmlTextWriterTag.Tr);
266 writer.RenderBeginTag(HtmlTextWriterTag.Td);
267 writer.Write(ExpirationDate);
268 writer.RenderEndTag();
269
270 writer.RenderBeginTag(HtmlTextWriterTag.Td);
271 writer.AddAttribute(HtmlTextWriterAttribute.Name, MonthListName);
272 writer.AddAttribute(HtmlTextWriterAttribute.Id, MonthListId);
273 writer.RenderBeginTag(HtmlTextWriterTag.Select);
274
275 for (int month = 1; month < 13; month++)
276 {
277 writer.AddAttribute(HtmlTextWriterAttribute.Value, month.ToString());
278 writer.RenderBeginTag(HtmlTextWriterTag.Option);
279 writer.Write(month.ToString());
280 writer.RenderEndTag();
281 }
282 writer.RenderEndTag();
283
284 /////////////////////////////////////
285
286 writer.Write(" ");
287
288 /////////////////////////////////////
289 writer.AddAttribute(HtmlTextWriterAttribute.Name, YearListName);
290 writer.AddAttribute(HtmlTextWriterAttribute.Id, YearListId);
291 writer.RenderBeginTag(HtmlTextWriterTag.Select);
292
293 for (int year = 2008; year < 2015; year++)
294 {
295 writer.AddAttribute(HtmlTextWriterAttribute.Value, year.ToString());
296 writer.RenderBeginTag(HtmlTextWriterTag.Option);
297 writer.Write(year.ToString());
298 writer.RenderEndTag();
299 }
300 writer.RenderEndTag();
301
302 writer.RenderEndTag();
303 writer.RenderEndTag();
304 //*****************************************************************************
305
306 writer.RenderBeginTag(HtmlTextWriterTag.Tr);
307 writer.AddAttribute(HtmlTextWriterAttribute.Colspan, "2");
308 writer.AddAttribute(HtmlTextWriterAttribute.Align, "center");
309 writer.RenderBeginTag(HtmlTextWriterTag.Td);
310 writer.AddAttribute(HtmlTextWriterAttribute.Name, SubmitButtonName);
311 writer.AddAttribute(HtmlTextWriterAttribute.Value, SubmitButtonText);
312 writer.AddAttribute(HtmlTextWriterAttribute.Id, SubmitButtonId);
313 writer.AddAttribute(HtmlTextWriterAttribute.Type, "submit");
314 writer.RenderBeginTag(HtmlTextWriterTag.Input);
315 writer.RenderEndTag();
316
317 writer.RenderEndTag();
318 writer.RenderEndTag();
319
320 //******************************************************************************
321
322
323 }
324
325 }
326 }
327
希望大家继续支持啊!谢谢!