今天由于项目需要在页面上实现一个复合验证功能,本来想用脚本实现,发现会写一大堆重复的隐藏代码.最后选择了自己实现一个自定义验证器控件.这样以后也可以直接拿来复用. 因为往往需要同时满足1:用户输入不能为空.2: 输入值必须满足相应的格式. 这样的功能.而不用再为数据库添加字段来完成.
代码如下:
1
using System;
2using System.ComponentModel;
3using System.Drawing;
4using System.Security.Permissions;
5using System.Web;
6using System.Web.UI;
7using System.Web.UI.WebControls;
8
9namespace Kim.AspNet.Validatator.Controls
10
{
11
[
12 AspNetHostingPermission(SecurityAction.Demand,
13 Level = AspNetHostingPermissionLevel.Minimal),
14 AspNetHostingPermission(SecurityAction.InheritanceDemand,
15 Level = AspNetHostingPermissionLevel.Minimal),
16 DefaultEvent("ValidTextBoxChanged"),
17 DefaultProperty("Text"),
18 ToolboxData("<{0}:ValidTextBox runat=\"server\"> </{0}:ValidTextBox>"),
19 ]
20 public class ValidTextBox : CompositeControl
21
{
22 //Contact Ways
23 private DropDownList validType;
24 //User Enter Values
25 private TextBox validTextBox;
26
27 //valid user enter values
28 //can not empty
29 private RequiredFieldValidator emailValidator;
30 private RequiredFieldValidator handphoneValidator;
31 private RequiredFieldValidator phoneValidator;
32
33 //have the right format
34 private RegularExpressionValidator emilFormatValidator;
35 private RegularExpressionValidator handphoneFormatValidator;
36 private RegularExpressionValidator phoneFormatValidator;
37
38 private static readonly object EventValidKey =
39 new object();
40
41 // get TextBox value
42 [
43 Bindable(true),
44 Category("Appearance"),
45 DefaultValue(""),
46 Description("get value from textbox")
47 ]
48 public string TextValue
49 {
50 get
51 {
52 EnsureChildControls();
53 return validTextBox.Text;
54
}
55 set
56 {
57 EnsureChildControls();
58 validTextBox.Text = value;
59
60 }
61 }
62
63
64 [
65 Bindable(true),
66 Category("Appearance"),
67 DefaultValue(""),
68 Description("Error message for the phone validator.")
69 ]
70 public string ValidPhoneErrorMessage
71 {
72 get
73 {
74 EnsureChildControls();
75 return phoneValidator.ErrorMessage;
76 }
77 set
78 {
79 EnsureChildControls();
80 phoneValidator.ErrorMessage = value;
81 phoneValidator.ToolTip = value;
82 }
83 }
84
85
86 [
87 Bindable(true),
88 Category("Appearance"),
89 DefaultValue(""),
90 Description("Error message for the hand phone validator.")
91 ]
92 public string ValidHandPhoneErrorMessage
93 {
94 get
95 {
96 EnsureChildControls();
97 return handphoneValidator.ErrorMessage;
98 }
99 set
100 {
101 EnsureChildControls();
102 handphoneValidator.ErrorMessage = value;
103 handphoneValidator.ToolTip = value;
104 }
105 }
106
107
108 [
109 Bindable(true),
110 Category("Appearance"),
111 DefaultValue(""),
112 Description("Error message for the e-mail validator.")
113 ]
114 public string ValidEmailErrorMessage
115 {
116 get
117 {
118 EnsureChildControls();
119 return emailValidator.ErrorMessage;
120 }
121 set
122 {
123 EnsureChildControls();
124 emailValidator.ErrorMessage = value;
125 emailValidator.ToolTip = value;
126 }
127 }
128
129
130 // The Valid event.
131 [
132 Category("Action"),
133 Description("Raised when the user input the value.")
134 ]
135 public event EventHandler ValidTextBoxChanged
136 {
137 add
138 {
139 Events.AddHandler(EventValidKey, value);
140 }
141 remove
142 {
143 Events.RemoveHandler(EventValidKey, value);
144 }
145 }
146
147
148 protected virtual void OnValidTextBoxChanged(EventArgs e)
149 {
150 EventHandler TextBoxChangedHandler =
151 (EventHandler)Events[EventValidKey];
152 if (TextBoxChangedHandler != null)
153 {
154 TextBoxChangedHandler(this, e);
155 }
156 }
157
158
159 private void _TextBox_Changed(object source, EventArgs e)
160 {
161 OnValidTextBoxChanged(EventArgs.Empty);
162 }
163
164 protected override void RecreateChildControls()
165 {
166 EnsureChildControls();
167 }
168
169
170 protected override void CreateChildControls()
171 {
172 Controls.Clear();
173
174 ListItem list;
175 validType = new DropDownList();
176 validType.ID = "validDrpList";
177
178 list = new ListItem();
179 list.Text = "电话";
180 list.Value = "0";
181 validType.Items.Add(list);
182
183 list = new ListItem();
184 list.Text = "邮件";
185 list.Value = "1";
186 validType.Items.Add(list);
187
188 list = new ListItem();
189 list.Text = "手机";
190 list.Value = "2";
191 validType.Items.Add(list);
192
193 validTextBox = new TextBox();
194 validTextBox.ID = "validTextBox";
195
196 //phone valid
197 phoneValidator = new RequiredFieldValidator();
198 phoneValidator.ID = "phoneValidator";
199 phoneValidator.ControlToValidate = validTextBox.ID;
200 phoneValidator.Text = "电话号码不能为空!";
201 phoneValidator.Display = ValidatorDisplay.Dynamic;
202
203 phoneFormatValidator = new RegularExpressionValidator();
204 phoneFormatValidator.ID = "phoneFormatValidation";
205 phoneFormatValidator.Text = "电话号码格式不正确";
206 phoneFormatValidator.Display = ValidatorDisplay.Dynamic;
207 phoneFormatValidator.ControlToValidate = validTextBox.ID;
208 phoneFormatValidator.ValidationExpression = @"(0\d{2}-\d{8}|0\d{3}-\d{7})-\d{2,4}|(0\d{2}-\d{8}|0\d{3}-\d{7})";
209
210 //email valid
211 emailValidator = new RequiredFieldValidator();
212 emailValidator.ID = "emailValidator";
213 emailValidator.ControlToValidate =
214 validTextBox.ID;
215 emailValidator.Text = "请输入邮件地址!";
216 emailValidator.Display = ValidatorDisplay.Dynamic;
217
218 emilFormatValidator = new RegularExpressionValidator();
219 emilFormatValidator.ID = "emailFormatValidation";
220 emilFormatValidator.Text = "邮件格式不正确";
221 emilFormatValidator.Display = ValidatorDisplay.Dynamic;
222 emilFormatValidator.ControlToValidate = validTextBox.ID;
223 emilFormatValidator.ValidationExpression=@"\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*";
224
225 //handphone valid
226 handphoneValidator = new RequiredFieldValidator();
227 handphoneValidator.ID = "handphoneValidator";
228 handphoneValidator.ControlToValidate =
229 validTextBox.ID;
230 handphoneValidator.Text = "请输入手机号码!";
231 handphoneValidator.Display = ValidatorDisplay.Dynamic;
232
233 handphoneFormatValidator = new RegularExpressionValidator();
234 handphoneFormatValidator.ID = "handphoneValidation";
235 handphoneFormatValidator.Text = "手机号码格式不正确";
236 handphoneFormatValidator.Display = ValidatorDisplay.Dynamic;
237 handphoneFormatValidator.ControlToValidate = validTextBox.ID;
238 handphoneFormatValidator.ValidationExpression = @"^1[3,5][0-9][0-9]{8}$";
239
240 validTextBox.TextChanged += new EventHandler(_TextBox_Changed);
241 validType.AutoPostBack = true;
242
243 this.Controls.Add(validType);
244 this.Controls.Add(validTextBox);
245
246 this.Controls.Add(phoneValidator);
247 this.Controls.Add(phoneFormatValidator);
248
249 this.Controls.Add(emailValidator);
250 this.Controls.Add(emilFormatValidator);
251
252 this.Controls.Add(handphoneValidator);
253 this.Controls.Add(handphoneFormatValidator);
254 }
255
256 protected override void Render(HtmlTextWriter writer)
257 {
258 AddAttributesToRender(writer);
259 writer.AddAttribute(
260 HtmlTextWriterAttribute.Cellpadding,
261 "1", false);
262 writer.RenderBeginTag(HtmlTextWriterTag.Table);
263
264 //phone valid
265 if (validType.SelectedIndex == 0)
266 {
267 writer.RenderBeginTag(HtmlTextWriterTag.Tr);
268
269 writer.RenderBeginTag(HtmlTextWriterTag.Td);
270 validType.RenderControl(writer);
271 writer.RenderEndTag();
272
273 writer.RenderBeginTag(HtmlTextWriterTag.Td);
274 validTextBox.RenderControl(writer);
275 writer.RenderEndTag();
276
277 writer.RenderBeginTag(HtmlTextWriterTag.Td);
278 phoneValidator.RenderControl(writer);
279 writer.RenderEndTag();
280
281 writer.RenderBeginTag(HtmlTextWriterTag.Td);
282 handphoneFormatValidator.RenderControl(writer);
283 writer.RenderEndTag();
284
285 writer.RenderEndTag();
286 }
287 //email valid
288 if (validType.SelectedIndex == 1)
289 {
290 writer.RenderBeginTag(HtmlTextWriterTag.Tr);
291 writer.RenderBeginTag(HtmlTextWriterTag.Td);
292 validType.RenderControl(writer);
293 writer.RenderEndTag();
294
295 writer.RenderBeginTag(HtmlTextWriterTag.Td);
296 validTextBox.RenderControl(writer);
297 writer.RenderEndTag();
298
299 writer.RenderBeginTag(HtmlTextWriterTag.Td);
300 emailValidator.RenderControl(writer);
301 writer.RenderEndTag();
302
303 writer.RenderBeginTag(HtmlTextWriterTag.Td);
304 emilFormatValidator.RenderControl(writer);
305 writer.RenderEndTag();
306
307 writer.RenderEndTag();
308 }
309 //hand phone valid
310 if (validType.SelectedIndex == 2)
311 {
312 writer.RenderBeginTag(HtmlTextWriterTag.Tr);
313 writer.RenderBeginTag(HtmlTextWriterTag.Td);
314 validType.RenderControl(writer);
315 writer.RenderEndTag();
316
317 writer.RenderBeginTag(HtmlTextWriterTag.Td);
318 validTextBox.RenderControl(writer);
319 writer.RenderEndTag();
320
321 writer.RenderBeginTag(HtmlTextWriterTag.Td);
322 handphoneValidator.RenderControl(writer);
323 writer.RenderEndTag();
324
325 writer.RenderBeginTag(HtmlTextWriterTag.Td);
326 phoneFormatValidator.RenderControl(writer);
327 writer.RenderEndTag();
328 writer.RenderEndTag();
329 }
330 writer.RenderEndTag();
331 }
332 }
333
}
注意:开发环境为vs2008