DropDownList查询&Input(Checkbox)查询

  protected void btnGo_Click(object sender, EventArgs e)
    {
        var query1 = _Context.STO.AsQueryable();//根据产品别查
        var query2 = _Context.STO.AsQueryable();//根据仓库编号查
        var query3 = _Context.STO.AsQueryable();//根据仓库名称查

        //根据数据框的填入情况完善以上三个查询
        if (ddlProd.SelectedValue != "-1")
        {
            query1 = query1.Where(p=>p.PRODCODE == ddlProd.SelectedValue );
        }
        if (txtNo.Text.Trim().Length > 0)
        {
            query2 = query2.Where(p=>p.STORNO == txtNo.Text );
        }
        if (txtName.Text.Trim().Length > 0)
        {
            query3 = query3.Where(p => p.STORNAME.Contains(txtName.Text));
        }
         
        //三个查询条件用交集
        var query = query1.Intersect(query2).Intersect(query3);
        //绑定显示
        Repeater1.DataSource = query;
        Repeater1.DataBind();
    }

  //填充区域
    private void FillArea()
    {
        List<ItemData> list = new List<ItemData>();//新建一个ItemData类
        List<string> temp = _Context.House.Select(p=>p.Area).Distinct().ToList();//去重查出区域
        foreach (string s in temp) //遍历string 变成ItemData对象
        {
            ItemData data = new ItemData();
            data.Code = s;
            data.Name = s;
            list.Add(data);
        }
        //绑定数据
        Repeater1.DataSource = list;
        Repeater1.DataBind();
    }
    //填充租赁类型
    private void FillRentType()
    {
        List<ItemData> list = new List<ItemData>();
        List<string> temp = _Context.House.Select(p => p.RentType).Distinct().ToList();
        foreach (string s in temp)
        {
            ItemData data = new ItemData();
            data.Code = s;
            data.Name = s;
            list.Add(data);
        }
        Repeater2.DataSource = list;
        Repeater2.DataBind();

    }
    //填充房屋类型
    private void FillHouseType()
    {
        List<ItemData> list = new List<ItemData>();
        List<string> temp = _Context.House.Select(p => p.HouseType).Distinct().ToList();
        foreach (string s in temp)
        {
            ItemData data = new ItemData();
            data.Code = s;
            data.Name = s;
            list.Add(data);
        }
        Repeater3.DataSource = list;
        Repeater3.DataBind();
    }

 
//点击全选复选框，下面的条件复选框都会选上
<script language="javascript">
        function checkAll(ckall, ckname) {
            var cks = document.getElementsByName(ckname);
            for (var i = 0; i < cks.length; i++) {
                cks[i].checked = ckall.checked;
            }
        }
    </script>

 区 域 ：<input id="chAreaAll" type="checkbox" onclick="checkAll(this, ‘ckarea‘)"  />全选<br />
        <br />
        <asp:Repeater ID="Repeater1" runat="server">
            <ItemTemplate>
                <input id="ckArea_<%#Eval("Code") %>" name="ckarea" type="checkbox" value="<%#Eval("Code") %>"/><span><%#Eval("Name") %></span>
            </ItemTemplate>
        </asp:Repeater>
        <br />
        <br />
        租赁类型：<input id="ckRentTypeAll" type="checkbox" onclick="checkAll(this,‘ckrenttype‘)"/>全选<br />
        <br />
        <asp:Repeater ID="Repeater2" runat="server">
            <ItemTemplate>
                <input id="ckRentType_<%#Eval("Code") %>" name="ckrenttype" type="checkbox" value="<%#Eval("Code") %>" /><span><%#Eval("Name") %></span>
            </ItemTemplate>
        </asp:Repeater>
        <br />
        <br />
        房屋类型：<input id="ckHouseType" type="checkbox" onclick="checkAll(this,‘ckhousetype‘)" />全选<br />
        <br />
        <asp:Repeater ID="Repeater3" runat="server">
            <ItemTemplate>
                <input id="ckHouseType_<%#Eval("Code") %>" name="ckhousetype" type="checkbox" value="<%#Eval("Code") %>" /><span><%#Eval("Name") %></span>
            </ItemTemplate>
        </asp:Repeater>

  protected void Button1_Click(object sender, EventArgs e)
    {
        //区域查询
        var query1 = _Context.House.AsQueryable();
        if (Request["ckarea"] != null)
        {
            string area = Request["ckarea"];
            string[] areas = area.Split(‘,‘);
            query1 = query1.Where(p=>areas.Contains(p.Area));
        }

        //租赁类型查询
        var query2 = _Context.House.AsQueryable();
        if (Request["ckrenttype"] != null)
        {
            string renttype = Request["ckrenttype"];
            string[] renttypes = renttype.Split(‘,‘);
            query2 = query2.Where(p=> renttypes.Contains(p.RentType));
        }

        //房屋类型查询
        var query3 = _Context.House.AsQueryable();
        if (Request["ckhousetype"] != null)
        {
            string housetype = Request["ckhousetype"];
            string[] housetypes = housetype.Split(‘,‘);
            query3 = query3.Where(p=> housetypes.Contains(p.HouseType));
        }

        //关键字查询
        var query4 = _Context.House.AsQueryable();
        if (txtSearch.Text.Trim().Length > 0)
        {
            query4 = query4.Where(p=>p.KeyWord.Contains(txtSearch.Text));
        }

        //取交集 绑定显示数据
        var query = query1.Intersect(query2).Intersect(query3).Intersect(query4); ;
        Repeater4.DataSource = query;
        Repeater4.DataBind();
    }