新学习到的GridView使用方法
最近新做了一个评论系统，在制作的过程中又学会了几点GridView控件的使用方法，为了以后不忘记还是记录下来吧！
还是用实际例子来描述，根据读者的留言内容来进行评判（支持/反对）。
实例图示(1)
以下是详细代码：
1
protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
2
{
3
//首先设定GridView1的DataKeyNames值为"id"
4 int index = Convert.ToInt32(e.CommandArgument.ToString());
5 //e.CommandArgument是选定行的索引
6 int id = Convert.ToInt32(GridView1.DataKeys[index].Value);
7 //获取该行的的id值
8 if (e.CommandName == "zhichi")//如果选择的是支持
9
{
10 if (Request.Cookies["zhichi" + id.ToString()] != null)
11 //如果cookie还没有过期
12 {
13 ((Label)GridView1.Rows[index].FindControl("Tip")).Text = "请休息下再点击！";
14 ((Label)GridView1.Rows[index].FindControl("Tip")).Visible = true;
15 ((Label)GridView1.Rows[index].FindControl("Tip")).ForeColor = System.Drawing.Color.Red;
16 return;
17
}
18 else
19 {
20
21 string sql = "update reply set zhichi=zhichi+1 where id=" + id;
22 UpDateNoP(sql);
23 BindData();
24//点击过后创建一个新的cookie，防止恶意点击
25 HttpCookie zhichi = new HttpCookie("zhichi" + id.ToString(), "yes");
26 zhichi.Expires = DateTime.Now.AddSeconds(300);//有效期为300秒
27 Response.Cookies.Add(zhichi);//写入Cookie
28
29
30 }
31 }
32 else//如果选择的不是支持
33 {
34 if (Request.Cookies["fandui" + id.ToString()] != null)
35 {
36 ((Label)GridView1.Rows[index].FindControl("Tip")).Text = "请休息下再点击！";
37 ((Label)GridView1.Rows[index].FindControl("Tip")).Visible = true;
38 ((Label)GridView1.Rows[index].FindControl("Tip")).ForeColor = System.Drawing.Color.Red;
39 return;
40 }
41 else
42 {
43 string sql = "update reply set fandui=fandui+1 where id=" + id;
44 UpDateNoP(sql);
45 BindData();
46 HttpCookie fandui = new HttpCookie("fandui" + id.ToString(), "yes");
47 fandui.Expires = DateTime.Now.AddSeconds(300);//有效期为300秒
48 Response.Cookies.Add(fandui);//写入Cookie
49 Label2.Visible = false;
50 }
51 }
52
}
protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)2
{
3
//首先设定GridView1的DataKeyNames值为"id"4
int index = Convert.ToInt32(e.CommandArgument.ToString());5
//e.CommandArgument是选定行的索引6
int id = Convert.ToInt32(GridView1.DataKeys[index].Value);7
//获取该行的的id值8
if (e.CommandName == "zhichi")//如果选择的是支持9
{
10
if (Request.Cookies["zhichi" + id.ToString()] != null)11
//如果cookie还没有过期12
{13
((Label)GridView1.Rows[index].FindControl("Tip")).Text = "请休息下再点击！";14
((Label)GridView1.Rows[index].FindControl("Tip")).Visible = true;15
((Label)GridView1.Rows[index].FindControl("Tip")).ForeColor = System.Drawing.Color.Red;16
return;17
}18
else19
{20
21
string sql = "update reply set zhichi=zhichi+1 where id=" + id;22
UpDateNoP(sql);23
BindData();24
//点击过后创建一个新的cookie，防止恶意点击25
HttpCookie zhichi = new HttpCookie("zhichi" + id.ToString(), "yes");26
zhichi.Expires = DateTime.Now.AddSeconds(300);//有效期为300秒27
Response.Cookies.Add(zhichi);//写入Cookie28
29
30
}31
}32
else//如果选择的不是支持33
{34
if (Request.Cookies["fandui" + id.ToString()] != null)35
{36
((Label)GridView1.Rows[index].FindControl("Tip")).Text = "请休息下再点击！";37
((Label)GridView1.Rows[index].FindControl("Tip")).Visible = true;38
((Label)GridView1.Rows[index].FindControl("Tip")).ForeColor = System.Drawing.Color.Red;39
return;40
}41
else42
{43
string sql = "update reply set fandui=fandui+1 where id=" + id;44
UpDateNoP(sql);45
BindData();46
HttpCookie fandui = new HttpCookie("fandui" + id.ToString(), "yes");47
fandui.Expires = DateTime.Now.AddSeconds(300);//有效期为300秒48
Response.Cookies.Add(fandui);//写入Cookie49
Label2.Visible = false;50
}51
}52
}
