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迁徙5_Mark一个昨天.net实验的小任务_2016-6-4

2017-01-13 16:01 183 查看

虽然依然知道自己很菜，但是自己写出来程序，运行成功的感觉实在是太好了

瞬间对自己充满了期望，希望自己以后可以慢慢的摆脱菜鸟这个冠名哈哈哈哈哈哈~~~好了，废话不多说。上代码，及运行结果。
数据库DB1的users表中数据如下：

代码如下：
Main.aspx中代码如下:

<formid="form1"runat="server">

<asp:LabelID="L1"runat="server"Text="分类ID:"></asp:Label>

<asp:TextBoxID="TB1"runat="server"Width="330px"Text="输入分类ID，只用于修改和删除"></asp:TextBox>

<br />

<asp:ButtonID="B1"runat="server"Text="显示全部"onclick="B1_Click"/>

<asp:ButtonID="B2"runat="server"Text="模糊查找"onclick="B2_Click"/>

<asp:ButtonID="B3"runat="server"Text="插入"onclick="B3_Click"/>

<asp:ButtonID="B4"runat="server"
Text="修改"onclick="B4_Click"/>

<asp:ButtonID="B5"runat="server"Text="删除"onclick="B5_Click"/>

<asp:GridViewID="gv1"runat="server">

</asp:GridView>

</form>

Main.aspx.cs中代码如下:
------------------------------------删除在本页面中实现

using System.Data.SqlClient;

protectedvoid B1_Click(objectsender,EventArgs
e)
    {
        SqlConnection conn =newSqlConnection();
        conn.ConnectionString ="DataSource=PC-20160404TYJJ;Initial Catalog=DB1;Integrated Security=True";
        SqlCommand cmd =newSqlCommand("select*
from users",conn);
        conn.Open();
        SqlDataReader dr = cmd.ExecuteReader();
        gv1.DataSource = dr;
        gv1.DataBind();
        dr.Close();
        conn.Close();
    }

protected voidB3_Click(object sender,EventArgs e)
    {
       Response.Redirect("insert.aspx");
    }

protected voidB4_Click(object sender,EventArgs e)
    {
       Response.Redirect("update.aspx?id="+TB1.Text);
    }

protected voidB5_Click(object sender,EventArgs e)
    {
       SqlConnection conn =newSqlConnection();
       conn.ConnectionString ="DataSource=PC-20160404TYJJ;Initial Catalog=DB1;Integrated Security=True";
       SqlCommand cmd =newSqlCommand("deletefrom
users where id="+TB1.Text+";",conn);
       conn.Open();
       cmd.ExecuteNonQuery();
       conn.Close();
       Response.Write("<scriptlanguage='javascript'>alert('删除成功，点击显示查看');</script>");
    }

protected voidB2_Click(object sender,EventArgs e)
    {
       Response.Redirect("search.aspx");
    }
search.aspx中代码如下:

<formid="form1"runat="server">

<asp:LabelID="L1"runat="server"Text="分类名:"></asp:Label>

<asp:TextBoxID="TB1"runat="server"></asp:TextBox>

<asp:ButtonID="sou"runat="server"Text="搜索"onclick="sou_Click"/>

<asp:ButtonID="back"runat="server"Text="返回"onclick="back_Click"/>

<asp:GridViewID="gv1"runat="server">

</asp:GridView>
</form>

Search.aspx.cs中代码如下：

protectedvoid sou_Click(objectsender,EventArgs
e)
    {
       SqlConnection conn =newSqlConnection();
       conn.ConnectionString ="DataSource=PC-20160404TYJJ;Initial Catalog=DB1;Integrated Security=True";
       SqlCommand cmd =newSqlCommand("select*
from users where name like '%"+TB1.Text+"%'",conn);
       conn.Open();
       SqlDataReader dr = cmd.ExecuteReader();
       gv1.DataSource = dr;
       gv1.DataBind();
       dr.Close();
        conn.Close();

    }

protected voidback_Click(object sender,EventArgs e)
    {
       Response.Redirect("main.aspx");
    }

Insert.aspx中代码如下:

<formid="form1"runat="server">

<asp:LabelID="L1"runat="server"Text="用户名："></asp:Label>

<asp:TextBoxID="name"runat="server"></asp:TextBox>

<br />

<asp:LabelID="L2"runat="server"Text="密码："></asp:Label>

<asp:TextBoxID="password"runat="server"></asp:TextBox>

<br />

<asp:ButtonID="add"runat="server"Text="插入"onclick="add_Click"/>

<asp:ButtonID="back"runat="server"Text="返回"onclick="back_Click"/>

</form>

Insert.aspx.cs中代码如下:

protectedvoid add_Click(objectsender,EventArgs
e)
    {
       SqlConnection conn =newSqlConnection();
       conn.ConnectionString ="DataSource=PC-20160404TYJJ;Initial Catalog=DB1;Integrated Security=True";
       SqlCommand cmd =newSqlCommand("insertinto
users (name,password) values ('"+name.Text+"','"+password.Text+"')",conn);
       conn.Open();
       cmd.ExecuteNonQuery();
       conn.Close();
       Response.Write("<scriptlanguage='javascript'>alert('添加成功，点击返回查看');</script>");
    }

protected voidback_Click(object sender,EventArgs e)
    {
       Response.Redirect("main.aspx");
    }

Update.aspx中代码如下:

<formid="form1"runat="server">

<asp:LabelID="l1"runat="server"Text="ID:"Width="70px"></asp:Label>

<asp:TextBoxID="ID"runat="server"></asp:TextBox>

<br />

<asp:LabelID="l2"runat="server"Text="用户名："Width="70px"></asp:Label>

<asp:TextBoxID="name"runat="server"></asp:TextBox>

<br />

<asp:LabelID="l3"runat="server"Text="密码："Width="70px"></asp:Label>

<asp:TextBoxID="password"runat="server"></asp:TextBox>

<br />

<asp:ButtonID="gai"runat="server"Text="修改"onclick="gai_Click"/>

<asp:ButtonID="back"runat="server"Text="返回"onclick="back_Click"/>

</form>

Update.aspx.cs中代码如下:

protectedvoid Page_Load(objectsender,EventArgs
e)
    {
       string id = Request.QueryString["id"];
       ID.Text = id;
    }

protected voidgai_Click(object sender,EventArgs e)
    {
       SqlConnection conn =newSqlConnection();
        conn.ConnectionString ="Data Source=PC-20160404TYJJ;InitialCatalog=DB1;Integrated Security=True";
       SqlCommand cmd =newSqlCommand("updateusers
set name='"+name.Text+"',password='"+password.Text+"' where id="+ID.Text+";",conn);
       conn.Open();
       cmd.ExecuteNonQuery();
       conn.Close();
       Response.Write("<scriptlanguage='javascript'>alert('修改成功，点击返回查看');</script>");
    }

protected voidback_Click(object sender,EventArgs e)
    {
       Response.Redirect("main.aspx");
    }

运行结果如下：

Main.aspx