DropDownList 二级联动保存时第二个DropDownList 被刷新

amo530 2012-05-26 10:34:20

自己想做个DropDownList 二级联动用户控件，但是在保存数据时，第二个DropDownList被刷新，请各位帮忙指点下
代码如下：
编辑页面：
<%@ Page Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true"
CodeFile="UserOpt.aspx.cs" Inherits="IBP_UserOpt" Title="无标题页" EnableEventValidation="false" %>
<%@ Register TagPrefix="uc1" TagName="OrgDep" Src="~/UserControl/OrgDep.ascx" %>
<%@ Register TagPrefix="title" TagName="menuTab" Src="~/UserControl/MenuTab.ascx" %>
<asp:Content ID="cWorkTitle" ContentPlaceHolderID="WorkTitle" runat="Server">
<script src="../JS/Common.js" type="text/javascript"></script>
<script src="../JS/jquery-1.7.2.js" type="text/javascript"></script>
</asp:Content>
<asp:Content ID="cWorkTop" ContentPlaceHolderID="WorkTop" runat="Server">
</asp:Content>
<asp:Content ID="cWorkMenu" ContentPlaceHolderID="WorkMenu" runat="Server">
<title:menuTab ID="menuTab" runat="server" DefaultSelect="0" MenuName="角色信息" />
</asp:Content>
<asp:Content ID="cWorkButton" ContentPlaceHolderID="WorkButton" runat="Server">
<asp:Button ID="btnSave" runat="server" CssClass="button2" Text="保存" OnClick="btnSave_Click" />
<input id="btnClose" type="button" class="button2" value="关闭" onclick="cm.CloseWindow()" />
</asp:Content>
<asp:Content ID="cWorkForm" ContentPlaceHolderID="WorkForm" runat="Server">
<table cellspacing="0" cellpadding="2" border="0" width="100%">
<tr>
<td width="70px">
姓名：
</td>
<td>
<asp:TextBox ID="txtName" runat="server" CssClass="Line"></asp:TextBox>
</td>
</tr>
<tr>
<td width="70px">
帐号：
</td>
<td>
<asp:TextBox ID="txtLoginName" runat="server" CssClass="Line"></asp:TextBox>
</td>
</tr>
<tr>
<td width="70px">
性别：
</td>
<td>
<asp:RadioButtonList ID="rdbSex" runat="server" RepeatDirection="Horizontal">
<asp:ListItem Text="男" Value="1" Selected="True"></asp:ListItem>
<asp:ListItem Text="女" Value="0"></asp:ListItem>
</asp:RadioButtonList>
</td>
</tr>
<tr>
<td width="70px">
角色：
</td>
<td >
<asp:DropDownList ID="ddlRole" runat="server" Width="200px">
</asp:DropDownList>
</td>
</tr>
<tr>
<td width="70px">
机构：
</td>
<td>
<uc1:OrgDep id="orgdep" runat="server"></uc1:OrgDep>
</td>
</tr>
</table>
</asp:Content>
<asp:Content ID="cWorkGrid" ContentPlaceHolderID="WorkGrid" runat="Server">
</asp:Content>
<asp:Content ID="cWorkEnd" ContentPlaceHolderID="WorkEnd" runat="Server">
</asp:Content>
<asp:Content ID="cWorkFooter" ContentPlaceHolderID="WorkFooter" runat="Server">
</asp:Content>

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using Core.IBP;
using Core.Common;
public partial class IBP_UserOpt : PageBase
{
protected void Page_Load(object sender, EventArgs e)
{
if (IsPostBack) return;
ViewState["opt"] = Request["operation"] == null ? "view" : Request["operation"];
ViewState["ID"] = Request["ID"] != null ? Request["ID"] : "0";
InitData();
InitInfo();
InitPower();
}
private void InitData()
{
BaseSet.Initddl(ddlRole, IBP_T_Role.GetList(), false);
}
private void InitPower()
{
if (ViewState["opt"].ToString() == "view")
{
btnSave.Visible = false;
}
}
private void InitInfo()
{
DataTable dt = IBP_T_User.GetInfo(ViewState["ID"].ToString());
if (dt != null && dt.Rows.Count > 0)
{
txtName.Text = dt.Rows[0]["sName"].ToString();
txtLoginName.Text = dt.Rows[0]["sLoginName"].ToString();
rdbSex.SelectedValue = dt.Rows[0]["iSex"].ToString();
ddlRole.SelectedValue = dt.Rows[0]["iRoleID"].ToString();
orgdep.Orgid = dt.Rows[0]["iOrgid"].ToString();
orgdep.Depid = dt.Rows[0]["iDepid"].ToString();
}
}
protected void btnSave_Click(object sender, EventArgs e)
{
string mes = checkValue();
if (mes.Length > 0)
{
this.ShowMessage(mes);
return;
}
if (ViewState["ID"].ToString() == "0")
{
bool b = IBP_T_User.CheckSameName(txtLoginName.Text);
if (b)
{
this.SaveClose("该帐号已存在");
return;
}
b = IBP_T_User.Insert(txtLoginName.Text, txtName.Text, int.Parse(rdbSex.SelectedValue), int.Parse(ddlRole.SelectedValue), int.Parse(orgdep.Orgid), int.Parse(orgdep.Depid));
if (b)
this.SaveClose("添加成功");
else
this.SaveClose("添加失败");
}
else
{
bool b = IBP_T_User.Save(ViewState["ID"].ToString(), txtLoginName.Text, txtName.Text, int.Parse(rdbSex.SelectedValue), int.Parse(ddlRole.SelectedValue),
int.Parse(orgdep.Orgid), int.Parse(orgdep.Depid));
if (b)
this.SaveClose("保存成功");
else
this.SaveClose("保存失败");
}
}
private string checkValue()
{
string mes = string.Empty;
if (txtName.Text.Length == 0)
{
mes += "名称不能为空\n";
}
if (txtLoginName.Text.Length == 0)
{
mes += "账号不能为空\n";
}
return mes;
}
}

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licai1210 2012-05-27

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这个代码太长了，既然是第二个让刷新了，那你在提交的时候把第二的选中的值作为默认选项不就好了吗

amo530 2012-05-26

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用户控件页面：
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="OrgDep.ascx.cs" Inherits="UserControl_OrgDep" %>
<table cellspacing="0" cellpadding="0" width="100%">
<tr>
<td>
<asp:DropDownList ID="ddlOrg" runat="server" onchange="GetDep()">
</asp:DropDownList>
<asp:DropDownList ID="ddlDep" runat="server">
</asp:DropDownList>
</td>
</tr>
</table>
<script type="text/javascript">
function GetDep() {
var id=$("#ctl00_WorkForm_orgdep_ddlOrg").val();
$("#ctl00_WorkForm_orgdep_ddlDep").html("");
$.getJSON("../UserControl/Handler.ashx?action=GetDepList&Orgid=" + id, null, function(json) {
$.each(json, function(i) {
$("#ctl00_WorkForm_orgdep_ddlDep").append($("<option></option>").val(json[i].pk_id).html(json[i].sName))
});
});
$("<option></option>").val("-1").html("请选择").appendTo("#ctl00_WorkForm_orgdep_ddlDep");
}
</script>

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using Core.Common;
public partial class UserControl_OrgDep : System.Web.UI.UserControl
{
protected override void OnInit(EventArgs e)
{
if (Request.Form["ctl00$WorkForm$orgdep$ddlOrg"] != null)
{
InitOrg();
ddlOrg.ClearSelection();
ddlOrg.SelectedValue = Request.Form["ctl00$WorkForm$orgdep$ddlOrg"].ToString();
InitDep();
ddlDep.ClearSelection();
ddlDep.SelectedValue = Request.Form["ctl00$WorkForm$orgdep$ddlDep"].ToString();
return;
}
InitOrg();
InitDep();
base.OnInit(e);
}
public void DataBound()
{
InitOrg();
InitDep();
}
private void InitOrg()
{
string sql = "select * from IBP_T_Organization where 1=1";
string UserID = SessionUtil.UserID;
if (UserID != "1")
{
sql += " and pk_id in (select iOrgid from IBP_T_User pk_id=" + UserID + " )";
}

DataTable dt = EQCCD.DBManagement.DBManager.FillDataTable(sql);
ddlOrg.DataSource = dt;
ddlOrg.DataTextField = "sName";
ddlOrg.DataValueField = "PK_ID";
ddlOrg.DataBind();
ddlOrg.Items.Insert(0, new ListItem("请选择", "-1"));
}
private void InitDep()
{
string sql = "select * from IBP_T_Department where fk_orgid=" + ddlOrg.SelectedValue;
DataTable dt = EQCCD.DBManagement.DBManager.FillDataTable(sql);
ddlDep.DataSource = dt;
ddlDep.DataTextField = "sName";
ddlDep.DataValueField = "PK_ID";
ddlDep.DataBind();
ddlDep.Items.Insert(0, new ListItem("请选择", "-1"));
}
public string Orgid
{
get { return ddlOrg.SelectedValue; }
set
{
if (ddlOrg.Items.Count > 0)
{
ddlOrg.ClearSelection();
ddlOrg.SelectedValue = value;
InitDep();
}
}
}
public string Depid
{
get { return ddlDep.SelectedValue; }
set
{
if (ddlDep.Items.Count > 0)
{
ddlDep.ClearSelection();
ddlDep.SelectedValue = value;
}
}
}
}
Handler.ashx页面
<%@ WebHandler Language="C#" Class="Handler" %>
using System;
using System.Web;
using System.Text;
using System.Data;
using System.Collections.Generic;
public class Handler : IHttpHandler
{
public bool IsReusable
{
get
{
return false;
}
}
public void ProcessRequest(HttpContext context)
{
string value=string.Empty;
string key = context.Request.QueryString["action"];
var dictionary = new Dictionary<string, Func<HttpContext, string>>();

dictionary.Add("GetDepList", GetDepList);//获取部门列表

dictionary.Add("GetOrgList", GetOrgList);//获取机构列表

if(dictionary.ContainsKey(key))
{
value=dictionary[key].Invoke(context);
}
context.Response.Write(value);
}
private string GetDepList(HttpContext context)
{
StringBuilder sb = new StringBuilder();
string Orgid = context.Request.QueryString["Orgid"].ToString();
string sql = "select PK_ID,sName from dbo.IBP_T_Department where fk_orgid=" + Orgid;
DataTable dt = EQCCD.DBManagement.DBManager.FillDataTable(sql);
if (dt == null || dt.Rows.Count == 0)
{
return "";
}
else
{
sb.Append("[");
for (int i = 0; i < dt.Rows.Count; i++)
{
//返回JOSN数据
sb.Append("{\"pk_id\":\"" + dt.Rows[i]["pk_id"].ToString() + "\",\"sName\":\"" + dt.Rows[i]["sName"].ToString() + "\"},");
}
sb.Remove(sb.Length - 1, 1);
sb.Append("]");
}
return sb.ToString();
}
private string GetOrgList(HttpContext context)
{
StringBuilder sb = new StringBuilder();
string UserID = context.Request.QueryString["UserID"].ToString();
string sql = "select * from IBP_T_Organization where 1=1";
if (UserID != "1")
{
sql += " and pk_id in (select iOrgid from IBP_T_User pk_id=" + UserID + " )";
}
DataTable dt = EQCCD.DBManagement.DBManager.FillDataTable(sql);
if (dt == null || dt.Rows.Count == 0)
{
return "";
}
else
{
sb.Append("[");
for (int i = 0; i < dt.Rows.Count; i++)
{
//返回JOSN数据
sb.Append("{\"pk_id\":\"" + dt.Rows[i]["pk_id"].ToString() + "\",\"sName\":\"" + dt.Rows[i]["sName"].ToString() + "\"},");
}
sb.Remove(sb.Length - 1, 1);
sb.Append("]");
}
return sb.ToString();
}
}

amo530 2012-05-26