"); - } - } -} \ No newline at end of file diff --git "a/021\347\216\213\346\226\207\346\235\260/ASP.NET\347\275\221\350\257\276/6.3-Session\345\257\271\350\261\241/ShoppingCart.aspx.designer.cs" "b/021\347\216\213\346\226\207\346\235\260/ASP.NET\347\275\221\350\257\276/6.3-Session\345\257\271\350\261\241/ShoppingCart.aspx.designer.cs" deleted file mode 100644 index 6916d8c53527beebceeb090b195a1ff490dc2f76..0000000000000000000000000000000000000000 --- "a/021\347\216\213\346\226\207\346\235\260/ASP.NET\347\275\221\350\257\276/6.3-Session\345\257\271\350\261\241/ShoppingCart.aspx.designer.cs" +++ /dev/null @@ -1,26 +0,0 @@ -//------------------------------------------------------------------------------ -//
- ().FirstOrDefault();
- if(mo != null)
- {
- var path = (string)mo["ExecutablePath"];
- var executablePath = path != null ? path : string.Empty;
- Log.LogMessage("ExecutablePath is {0}", executablePath);
-
- if(executablePath.StartsWith(ImagePath, StringComparison.OrdinalIgnoreCase))
- {
- p.Kill();
- p.WaitForExit();
- Log.LogMessage("{0} is killed", executablePath);
- break;
- }
- }
- }
- }
- }
- }
- catch (Exception ex)
- {
- Log.LogWarning(ex.Message);
- }
- return true;
- ]]>
-
-
-
-
-
- ().FirstOrDefault();
- if(mo != null)
- {
- var path = (string)mo["ExecutablePath"];
- var executablePath = path != null ? path : string.Empty;
- Log.LogMessage("ExecutablePath is {0}", executablePath);
-
- if(executablePath.StartsWith(ImagePath, StringComparison.OrdinalIgnoreCase))
- {
- p.Kill();
- p.WaitForExit();
- Log.LogMessage("{0} is killed", executablePath);
- break;
- }
- }
- }
- }
- }
- }
- catch (Exception ex)
- {
- Log.LogWarning(ex.Message);
- }
- return true;
- ]]>
-
-
-
-
- " + "性别：" + r1.SelectedItem.Text + "
" + - "兴趣爱好：" + hb + "
" + "出生日期：" + t2.Text + "
" + "邮箱：" + t3.Text + "
" - + "地址：" + t4.Text); - } - else - { - Response.Write("信息未填完整"); - } - } - } - - } -} \ No newline at end of file diff --git "a/021\347\216\213\346\226\207\346\235\260/\344\275\234\344\270\232/0520/Work/Work1/WebForm2.aspx.designer.cs" "b/021\347\216\213\346\226\207\346\235\260/\344\275\234\344\270\232/0520/Work/Work1/WebForm2.aspx.designer.cs" deleted file mode 100644 index b2e78eab9f66e085e61bda8923badc93afdc0384..0000000000000000000000000000000000000000 --- "a/021\347\216\213\346\226\207\346\235\260/\344\275\234\344\270\232/0520/Work/Work1/WebForm2.aspx.designer.cs" +++ /dev/null @@ -1,26 +0,0 @@ -//------------------------------------------------------------------------------ -//
- ().FirstOrDefault();
- if(mo != null)
- {
- var path = (string)mo["ExecutablePath"];
- var executablePath = path != null ? path : string.Empty;
- Log.LogMessage("ExecutablePath is {0}", executablePath);
-
- if(executablePath.StartsWith(ImagePath, StringComparison.OrdinalIgnoreCase))
- {
- p.Kill();
- p.WaitForExit();
- Log.LogMessage("{0} is killed", executablePath);
- break;
- }
- }
- }
- }
- }
- }
- catch (Exception ex)
- {
- Log.LogWarning(ex.Message);
- }
- return true;
- ]]>
-
-
-
-
-
- ().FirstOrDefault();
- if(mo != null)
- {
- var path = (string)mo["ExecutablePath"];
- var executablePath = path != null ? path : string.Empty;
- Log.LogMessage("ExecutablePath is {0}", executablePath);
-
- if(executablePath.StartsWith(ImagePath, StringComparison.OrdinalIgnoreCase))
- {
- p.Kill();
- p.WaitForExit();
- Log.LogMessage("{0} is killed", executablePath);
- break;
- }
- }
- }
- }
- }
- }
- catch (Exception ex)
- {
- Log.LogWarning(ex.Message);
- }
- return true;
- ]]>
-
-
-
-
-
- ().FirstOrDefault();
- if(mo != null)
- {
- var path = (string)mo["ExecutablePath"];
- var executablePath = path != null ? path : string.Empty;
- Log.LogMessage("ExecutablePath is {0}", executablePath);
-
- if(executablePath.StartsWith(ImagePath, StringComparison.OrdinalIgnoreCase))
- {
- p.Kill();
- p.WaitForExit();
- Log.LogMessage("{0} is killed", executablePath);
- break;
- }
- }
- }
- }
- }
- }
- catch (Exception ex)
- {
- Log.LogWarning(ex.Message);
- }
- return true;
- ]]>
-
-
-
-
-
- ().FirstOrDefault();
- if(mo != null)
- {
- var path = (string)mo["ExecutablePath"];
- var executablePath = path != null ? path : string.Empty;
- Log.LogMessage("ExecutablePath is {0}", executablePath);
-
- if(executablePath.StartsWith(ImagePath, StringComparison.OrdinalIgnoreCase))
- {
- p.Kill();
- p.WaitForExit();
- Log.LogMessage("{0} is killed", executablePath);
- break;
- }
- }
- }
- }
- }
- }
- catch (Exception ex)
- {
- Log.LogWarning(ex.Message);
- }
- return true;
- ]]>
-
-
-
-
-
- ().FirstOrDefault();
- if(mo != null)
- {
- var path = (string)mo["ExecutablePath"];
- var executablePath = path != null ? path : string.Empty;
- Log.LogMessage("ExecutablePath is {0}", executablePath);
-
- if(executablePath.StartsWith(ImagePath, StringComparison.OrdinalIgnoreCase))
- {
- p.Kill();
- p.WaitForExit();
- Log.LogMessage("{0} is killed", executablePath);
- break;
- }
- }
- }
- }
- }
- }
- catch (Exception ex)
- {
- Log.LogWarning(ex.Message);
- }
- return true;
- ]]>
-
-
-
-
-
- ().FirstOrDefault();
- if(mo != null)
- {
- var path = (string)mo["ExecutablePath"];
- var executablePath = path != null ? path : string.Empty;
- Log.LogMessage("ExecutablePath is {0}", executablePath);
-
- if(executablePath.StartsWith(ImagePath, StringComparison.OrdinalIgnoreCase))
- {
- p.Kill();
- p.WaitForExit();
- Log.LogMessage("{0} is killed", executablePath);
- break;
- }
- }
- }
- }
- }
- }
- catch (Exception ex)
- {
- Log.LogWarning(ex.Message);
- }
- return true;
- ]]>
-
-
-
-
- | - | ||
| - | ||
| --%> - | ||
-
- 软件1班
- 软件2班
- 软件3班
- 软件4班
-
-
-
-```
-
-按钮“显示选项”的单击事件代码：
-
-```c#
- protected void Button1_Click(object sender, EventArgs e)
- {
- string str = this.RadioButtonList1.SelectedItem.Value + this.RadioButtonList1.SelectedItem.Text;
- this.Label1.Text = str;
- }
-```
-
-
-
-
-
-
-
-### CheckBoxList控件
-
-CheckBoxList为复选框列表控件，该控件可以设置多个子选项，允许用户同时选中多个选项。
-
-控件的子选项，用ListItem创建，代码如下
-
-```asp
-
-
- 计算机基础
- HTML网页编程
- JAVA编程基础
-
-
-
-
-```
-
-CheckBoxList1选项发生改变的事件代码：
-
-```c#
- protected void CheckBoxList1_SelectedIndexChanged(object sender, EventArgs e)
- {
- ListItemCollection items = this.CheckBoxList1.Items;
- string str = "";
- for (int i = 0; i < items.Count; i++)
- {
- if (items[i].Selected)
- {
- str += items[i].Value +":"+ items[i].Text +"\t";
-
- }
- }
-
- this.Label2.Text = str;
- }
-```
-
-内容改变后事件的触发还需要将AutoPostBack属性值设置为true;
-
-
-
-### DropDownList控件
-
-DropDownList控件：下拉列表控件；
-
-常用属性如下表：
-
-| 属性 | **说** **明** |
-| -------------------- | ------------------------------------------------------------ |
-| **AutoPostBack** | 选择一个列表项时DropDownList控件状态是否发回到服务器的值（True/False） |
-| DataMember | 获取或设置数据源中的特定表格以绑定到该控件 |
-| **DataSource** | 获取或设置填充列表控件的组成项的数据源 |
-| **DataTextField** | 获取或设置提供列表项文本内容的数源的字段 |
-| DataTextFormatString | 获取或设置用于控制如何显示绑定到列表控件的数据的格式字符串 |
-| **DataValueField** | 获取或设置提供列表项文本内容的数据源的字段 |
-| **Items** | 获取或者设置选项的值 |
-| **事 件** | **说 明** |
-| SelectedIndexChanged | 当从列表控件选择的内容在发布到服务器的操作之间发生变化时发生 |
-
-【实例】添加两个下拉列表控件，第一个为班级选项列表，第二个为学生选项列表；将数据库的class表和student数据绑定到相应的控件中。
-
-数据库访问类SqlHelper，代码如下：
-
-```c#
-public class SqlHelper
-{
- private static string severStr = "server=.;database=StudentDB;uid=sa;pwd=123456;";
- public static DataSet Query(string sqlstr)
- {
- SqlConnection con = new SqlConnection(severStr);
- SqlCommand com = new SqlCommand(sqlstr,con);
- SqlDataAdapter adapter = new SqlDataAdapter(com);
- DataSet dataSet = new DataSet();
- adapter.Fill(dataSet);
- return dataSet;
- }
-
- public static DataSet QueryClass()
- {
- DataSet dataSet = Query("select * from class");
- return dataSet;
- }
-
- public static DataSet QueryStudent(string classId)
- {
- string str = string.Format("select * from Student where classId='{0}'",classId);
- DataSet dataSet = Query(str);
- return dataSet;
- }
-}
-```
-
-在WebForm5.aspx.cs中添加数据绑定的业务逻辑，完整代码如下：
-
-```c#
-public partial class WebForm5 : System.Web.UI.Page
-{
- protected void Page_Load(object sender, EventArgs e)
- {
- if (!IsPostBack) {
- DataSet ds = SqlHelper.QueryClass();
- this.ddlClass.DataSource = ds;
- this.ddlClass.DataTextField = "className";
- this.ddlClass.DataValueField = "classId";
- this.ddlClass.DataBind();
- ListItem li = new ListItem("--请选择--");
- this.ddlClass.Items.Insert(0,li);
- this.ddlStudent.Items.Add("--请选择--");
- }
- else
- {
- this.ddlClass.Items.Remove("--请选择--");
- }
-
- }
-
- protected void ddlClass_SelectedIndexChanged(object sender, EventArgs e)
- {
- DataSet ds = SqlHelper.QueryStudent(this.ddlClass.SelectedValue);
- this.ddlStudent.DataSource = ds;
- this.ddlStudent.DataTextField = "StuName";
- this.ddlStudent.DataValueField = "StuId";
- this.ddlStudent.DataBind();
- }
-}
-```
-
-**数据绑定**
-
-我们可以使用数据绑定（Data Binding）来完成带有可选项目的列表，这些可选项目来自某个导入的数据源，比如数据库、XML 文件或脚本。
-
-下面的控件是支持数据绑定的列表控件：
-
-- asp:RadioButtonList
-- asp:CheckBoxList
-- asp:DropDownList
-- asp:Listbox
-
-
-
-通常在一个或多个 asp:ListItem 控件中定义以上每个控件中的可选项目，类似这样：
-
-```asp
-
-```
-
-控件的 DataSource 属性定义了控件的数据源。
-
-控件的 DataBind() 方法把 控件与数据源绑定在一起。
-
-例如：
-
-```c#
- protected void Page_Load(object sender, EventArgs e)
- {
- List
-
-
-
-在Page_Load事件中编写如下代码：
-
-```c#
-protected void Page_Load(object sender, EventArgs e)
-{
- if (!Page.IsPostBack)
- {
- this.lblTime.Text = System.DateTime.Now.ToString();
- }
-}
-```
-
-
-
-在提交按钮的“Click”事件中编写如下代码：
-
-```c#
-this.lblMessage.Visible = true;
-this.lblMessage.Text = "请确认您填写的信息：";
-this.lblMessage.Text += "" + "姓名：" + this.txtName.Text; -this.lblMessage.Text += "
" + "年龄：" + this.txtAge.Text; -this.lblMessage.Text += "
" + "爱好：" + this.txtHobit.Text; -``` - -**实例2**：个人信息填写界面，页面加载时，用代码添加性别选项 - - -前端代码： - -```html - -``` - -在Page_Load事件中编写如下代码： - -```C# -protected void Page_Load(object sender, EventArgs e) -{ - //!Page.IsPostBack代表第一次加载才执行性别下拉控件选项的填充 - if(!Page.IsPostBack){ - this.ddlSex.Items.Add("男"); - this.ddlSex.Items.Add("女"); - } - - -} -``` - -在提交按钮的“Click”事件中编写如下代码： - -```c# -protected void Button1_Click(object sender, EventArgs e) -{ - this.Label1.Text = "姓名：" + this.name.Text; - this.Label1.Text = this.Label1.Text+"性别：" +this.sexDropList.Text; - -} -``` - - - - - - -## 页面传值 - - - -### 页内数据传值 - -当想成为某个网站的会员而进行注册时，通常需要填写大量的个人信息，在提交时，如果用户填写的信息有误，或者不符合要求，系统会清空所有已填写内容，并提醒用户重新填写。如果能保留用户所填的信息，会起到更好的效果。 - -示例：HTML控件的的无状态维持。 - - - -Http是一个无状态协议，同一个会话的连续两个请求互相不了解，它们由最新实例化的环境进行解析，除了应用本身可能已经存储在全局对象中的所有信息外，该环境**不保存与会话有关的任何信息**。 - - - -基于Http协议的无状态特性，我们在ASP.Net的开发中也会经常碰到这种情况：用户上一次提交的东西，下次再提交时服务器就不记得了。很多时候，我们感到很不解？后来，我们发现原来每一次的请求服务器都开启了不同的线程来处理，也就是说每次都会new一个XXX.aspx.cs中的类对象实例来进行处理（上一次new出来为我们处理的page对象也许早就被服务器销毁了）。比如，我们在xxx.aspx.cs代码中写入了一个int类型的number成员（初始为0），每次请求我们都想让这个number自增一下，然后重新返回给浏览器。但就是这么一个简单的梦想，我们却无法轻易的实现。 - -示例：实现一个Counter计数器，每次点击显示单机总次数 - - - -分析结果：计数器变量没有被保存，每次单机的时候，都重新创建了一个 - -**PS：**这里我们可以这样来理解：假如我们去一个大型商场购物购买某个产品，第一次去的时候是A销售员接待了我们，带领我们来到XX产品的柜台并为我们推荐了XX产品；等我们回去使用XX产品后，觉得XX产品真心不错。第二次我们又去，但是这次却找不到上次那个A销售员了，相反商场分配了另一个B销售员来接待我们，他不知道我们上次选择了XX产品，相反它却一个劲地向我们推荐YY产品并把我们带向YY产品的柜台；这个时候，我们一般会说：**我擦，把上次那个妹子给我叫来！** - - - -在ASP.NET中可以利用视图状态ViewState实现页内数据的传递; - -```c# -//存放信息 -ViewState["nameId"]="0001"; - -//读取信息 -String NameID = ViewState["nameID"].ToString(); -``` - -ViewState主要作用是在页面回传的过程中保存状态值，使原本没有“记忆”的Http协议变得有“记忆”起来。 - - - -**实例：**采用ViewState存放单击次数，每次单击一次，计数器加1 - -``` - protected void Page_Load(object sender, EventArgs e) - { - if (!IsPostBack) - { - ViewState["MyCounter"] =0; - } - } - - static int count = 0; - protected void Button2_Click(object sender, EventArgs e) - { - count++; - Literal1.Text = "单机了 " + count + " 次"; - - //int myCount = (int)ViewState["MyCounter"]; - //myCount++; - //Literal1.Text = "单机了 "+ myCount + " 次"; - - //ViewState["MyCounter"] = myCount; - } -``` - -ViewState常用于保持单个用户的状态信息，有效期等于页面的生存期。 - -ViewState容器可以保持大量的数据，但是必须谨慎使用，因为过多使用会影响应用程序的性能。 - -### 跨页数据传递 - -PreviousPage：获取向当前页面传输数据的页面，使用FindControl方法可以根据控件名获取页面的控件； - - - - - - - - -发出提交的页面的关键代码 - -```asp -姓名：
- ().FirstOrDefault();
- if(mo != null)
- {
- var path = (string)mo["ExecutablePath"];
- var executablePath = path != null ? path : string.Empty;
- Log.LogMessage("ExecutablePath is {0}", executablePath);
-
- if(executablePath.StartsWith(ImagePath, StringComparison.OrdinalIgnoreCase))
- {
- p.Kill();
- p.WaitForExit();
- Log.LogMessage("{0} is killed", executablePath);
- break;
- }
- }
- }
- }
- }
- }
- catch (Exception ex)
- {
- Log.LogWarning(ex.Message);
- }
- return true;
- ]]>
-
-
-
-
-
- ().FirstOrDefault();
- if(mo != null)
- {
- var path = (string)mo["ExecutablePath"];
- var executablePath = path != null ? path : string.Empty;
- Log.LogMessage("ExecutablePath is {0}", executablePath);
-
- if(executablePath.StartsWith(ImagePath, StringComparison.OrdinalIgnoreCase))
- {
- p.Kill();
- p.WaitForExit();
- Log.LogMessage("{0} is killed", executablePath);
- break;
- }
- }
- }
- }
- }
- }
- catch (Exception ex)
- {
- Log.LogWarning(ex.Message);
- }
- return true;
- ]]>
-
-
-
-
-
- ().FirstOrDefault();
- if(mo != null)
- {
- var path = (string)mo["ExecutablePath"];
- var executablePath = path != null ? path : string.Empty;
- Log.LogMessage("ExecutablePath is {0}", executablePath);
-
- if(executablePath.StartsWith(ImagePath, StringComparison.OrdinalIgnoreCase))
- {
- p.Kill();
- p.WaitForExit();
- Log.LogMessage("{0} is killed", executablePath);
- break;
- }
- }
- }
- }
- }
- }
- catch (Exception ex)
- {
- Log.LogWarning(ex.Message);
- }
- return true;
- ]]>
-
-
-
-
-
- ().FirstOrDefault();
- if(mo != null)
- {
- var path = (string)mo["ExecutablePath"];
- var executablePath = path != null ? path : string.Empty;
- Log.LogMessage("ExecutablePath is {0}", executablePath);
-
- if(executablePath.StartsWith(ImagePath, StringComparison.OrdinalIgnoreCase))
- {
- p.Kill();
- p.WaitForExit();
- Log.LogMessage("{0} is killed", executablePath);
- break;
- }
- }
- }
- }
- }
- }
- catch (Exception ex)
- {
- Log.LogWarning(ex.Message);
- }
- return true;
- ]]>
-
-
-
-
- " +t2 + "
"+ - "出生日期：" + t4.Text + "
"+ "邮箱：" + t5.Text + "
"+ "地址：" + t6.Text + "
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