ASP.NET―001:GridView绑定List、页面返回值具体实现

程序员文章站 2024-02-27 14:41:03

用惯了wpf的绑定，asp.net的绑定貌似不是很好用。下面看看asp.net绑定的用法。一般来说可以直接绑定datatable的，不过我觉得绑定list比较符合面向对象编...

用惯了wpf的绑定，asp.net的绑定貌似不是很好用。下面看看asp.net绑定的用法。一般来说可以直接绑定datatable的，不过我觉得绑定list比较符合面向对象编程。
绑定的方法是两句代码：

gridview名.datasource = list<自定义类>;  

gridview名.databind();  

直接看例子吧，以下是一个绑定一个personmodel类的例子。其中用到了页面返回参数，使用js传递，js可写在前端也可直接写在后台代码里。
项目结构：
ASP.NET―001:GridView绑定List、页面返回值具体实现

效果：
ASP.NET―001:GridView绑定List、页面返回值具体实现

实体类

复制代码代码如下:

public class personmodel
{
private int personindex;

        public int personindex
        {
            get { return personindex; }

set { personindex = value; }
}

private string personid;

        public string personid
        {
            get { return personid; }

set { personid = value; }
}

private string personname;

        public string personname
        {
            get { return personname; }

set { personname = value; }
}

private string personsex;

        public string personsex
        {
            get { return personsex; }

set { personsex = value; }
}

private int personage;

        public int personage
        {
            get { return personage; }

set { personage = value; }
}

private bool personselected = false;

        public bool personselected
        {
            get { return personselected; }

            set { personselected = value; }
        }
    }

针对绑定的aspx页面写一个管理类，用于操作数据

复制代码代码如下:

public class childfrmmanager
{
private list<personmodel> personcollect = new list<personmodel>();

private static childfrmmanager instance = null;

        public list<personmodel> personcollect
        {
            get { return personcollect; }

set { personcollect = value; }
}

        public static childfrmmanager dogetinstance()
        {
            if (instance == null)
            {
                instance = new childfrmmanager();
            }

return instance;
}

        public void doaddpersons()
        {
            for (int i = 0; i < 20; i++)
            {
                personmodel model = new personmodel();

model.personindex = i + 1;

model.personid = system.guid.newguid().tostring();

model.personname = "测试" + i;

model.personage = 27 + i;

model.personsex = i % 2 == 0 ? "男" : "女";

model.personselected = false;

                this.personcollect.add(model);
            }
        }
    }

绑定的页面前端

复制代码代码如下:

<%@ page language="c#" autoeventwireup="true" codebehind="childfrm.aspx.cs" inherits="aspnetgridview.pages.childfrm" %>

<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd">

绑定页面后台

复制代码代码如下:

public partial class childfrm : system.web.ui.page
{
private childfrmmanager dmanager = null;

protected personmodel selectitem = null;

        protected void page_load(object sender, eventargs e)
        {
            dmanager = childfrmmanager.dogetinstance();

            if (!ispostback)
            {
                dmanager.doaddpersons();

this.dgpersons.datasource = dmanager.personcollect;

                this.dgpersons.databind();
            }
        }

        protected void selcted_click(object sender, eventargs e)
        {
            int selectindex = this.dgpersons.selectedindex;

            foreach (personmodel mitem in dmanager.personcollect)
            {
                if (mitem.personindex - 1 == selectindex)
                {
                    mitem.personselected = true;
                }
                else
                {
                    mitem.personselected = false;
                }
            }

selectitem = dmanager.personcollect[selectindex];

string vbcrlf = " ";

string strscript = "<script>" + vbcrlf;

strscript += "window.parent.returnvalue='" + selectitem.personname + "';" + vbcrlf;

strscript += "window.parent.close();" + vbcrlf;

strscript += "</script>" + vbcrlf;

            if (!isclientscriptblockregistered("clientscript"))
            {
                registerclientscriptblock("clientscript", strscript);
            }
        }
    }

承载绑定页面的页面

复制代码代码如下:

<%@ page language="c#" autoeventwireup="true" codebehind="framefrm.aspx.cs" inherits="aspnetgridview.pages.framefrm" %>

<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd">

主页面，获取返回值的js在前端

复制代码代码如下:

<%@ page language="c#" autoeventwireup="true" codebehind="default.aspx.cs" inherits="aspnetgridview._default" %>

<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd">

                  <td>
                  <asp:textbox id="txtshowreturnvalue" runat="server" width="100px" />
                  </td>
                  <td>
                  <asp:button id="btnopennewfrm" runat="server" text="选择" width="60px" onclientclick="opennewwindow()"/>
                  </td>
              </tr>
            </table>
        </form>
    </div>
</body>
<script type ='text/javascript'>
    function opennewwindow() {

var str = window.showmodaldialog('pages/framefrm.aspx', document.form1.txtshowreturnvalue.value, 'dialogwidth=1000px;dialogheight=900px', 'scroll:yes');

        if (str != null)
        { document.form1.txtshowreturnvalue.value = str; }
    }
</script>
</html>

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