Question

我有一个asp.net c＃页面，它显示了一个组织列表，并通过文本字段提供了“组织类型”及其地址。我最初使代码工作，选择组织将触发SelectedIndexChanged事件并填充额外的文本字段。

现在我已经添加了额外的功能来从记录中选择此信息，DropDownList始终保留在第一个选项。

我希望发生以下情况：

DropDownList将填入组织列表
记录oganisationID用于选择DropDownList
相应地填充文本字段
如果用户从列表中选择其他组织，则SelectedIndexChanged事件会再次填充相关字段。

您会注意到我已为该组织硬编码ID 43。我也很难将其传递给组织DDL。我可能错误地做了那个部分。我提供了asp.net和c＃代码隐藏：

<%@ Page Title="Incident Record" Language="C#" MasterPageFile="~/common/master/incident.master" AutoEventWireup="true" CodeFile="recordstackoverflowexample.aspx.cs" Inherits="incident_incidentdetails" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="cp" runat="Server">

<!-- Forms
  ================================================== -->
<div class="row">
    <div class="col-lg-12">
        <div class="well">
            <form class="bs-example form-horizontal" runat="server">
                <fieldset>
                    <legend>Incident Record</legend>

                    <asp:SqlDataSource ID="SQLDSRecordPage" runat="server" ConnectionString="<%$ ConnectionStrings:ConnString %>" DataSourceMode="DataSet" SelectCommand="uspRecordPage" SelectCommandType="StoredProcedure">
                        <SelectParameters>
                            <asp:QueryStringParameter Name="RecordID" QueryStringField="recordid" Type="Int32" />
                        </SelectParameters>
                    </asp:SqlDataSource>

                    <div class="form-group">
                        <label class="col-lg-3 control-label">Organisation's contact details</label>
                    </div>
                    <div class="form-group">
                        <div class="col-lg-6">

                            <asp:SqlDataSource ID="SQLDSOrganisations" runat="server" ConnectionString="<%$ ConnectionStrings:ConnString %>" SelectCommand="SELECT [OrganisationID], [OrganisationName] FROM [tblOrganisation] WHERE ([IsCurrent] = @IsCurrent) ORDER BY [OrganisationName]">
                                <SelectParameters>
                                    <asp:Parameter DefaultValue="TRUE" Name="IsCurrent" Type="Boolean" />
                                </SelectParameters>
                            </asp:SqlDataSource>
                            <asp:DropDownList class="form-control" ID="DDLOrganisation" name="SelOrganisation" runat="server" AutoPostBack="true" OnSelectedIndexChanged="DDLOrganisation_SelectedIndexChanged"></asp:DropDownList>

                        </div>
                    </div>
                    <asp:SqlDataSource ID="SqlDSOrganisationType" runat="server" ConnectionString="<%$ ConnectionStrings:ConnString %>" SelectCommand="SELECT [OrganisationID], [OrganisationName], [OrganisationType] FROM [tblOrganisation], [pickOrganisationType] WHERE [tblOrganisation].[OrganisationTypeID] = [pickOrganisationType].[OrganisationTypeID] AND ([IsCurrent] = @IsCurrent)  AND ([OrganisationID] = @OrganisationID)">
                        <SelectParameters>
                            <asp:Parameter DefaultValue="TRUE" Name="IsCurrent" Type="Boolean" />
                            <asp:ControlParameter ControlID="DDLOrganisation" Name="OrganisationID" PropertyName="SelectedValue" Type="Int32" />
                        </SelectParameters>
                    </asp:SqlDataSource>

                    <div class="form-group">
                        <div class="col-lg-2">
                            <label class="control-label">Organisation type:</label>
                        </div>
                        <div class="col-lg-4">
                            <asp:TextBox ID="TxtOrganisationType" class="form-control" runat="server" ReadOnly="true"></asp:TextBox>
                        </div>
                    </div>
                    <asp:SqlDataSource ID="SqlDSOrganisationAddress" runat="server" ConnectionString="<%$ ConnectionStrings:ConnString %>" SelectCommand="SELECT [AddressLine1], [AddressLine2], [AddressLine3], [Town], [County], [Postcode], [Telephone], [Fax], [Email] FROM [tblOrganisationAddress] WHERE ([OrganisationAddressID] = @OrganisationAddressID)">
                        <SelectParameters>
                            <asp:ControlParameter ControlID="DDLOrganisation" Name="OrganisationAddressID" PropertyName="SelectedValue" Type="Int32" />
                        </SelectParameters>
                    </asp:SqlDataSource>
                    <div class="form-group">
                        <div class="col-lg-2">
                            <label class="control-label">Address line 1:</label>
                        </div>
                        <div class="col-lg-4">
                            <asp:TextBox ID="TxtOrganisationAddressLine1" class="form-control" runat="server" ReadOnly="true"></asp:TextBox>
                        </div>
                    </div>

                    <div class="form-group">
                        <div class="col-lg-2">
                            <label class="control-label">Address line 2: </label>
                        </div>
                        <div class="col-lg-4">
                            <asp:TextBox ID="TxtOrganisationAddressLine2" class="form-control" runat="server" ReadOnly="true"></asp:TextBox>
                        </div>
                    </div>

                    <div class="form-group">
                        <div class="col-lg-2">
                            <label class="control-label">Address line 3:</label>
                        </div>
                        <div class="col-lg-4">
                            <asp:TextBox ID="TxtOrganisationAddressLine3" class="form-control" runat="server" ReadOnly="true"></asp:TextBox>
                        </div>
                    </div>



                    <div class="form-group">
                        <div class="col-lg-4 col-md-offset-2">
                            <a href="/incident/record.aspx">
                                <asp:Button class="form-control btn btn-success" ID="BtnUpdateRecord" PostBackUrl="~/incident/record.aspx" runat="server" Text="Update Record" /></a>
                        </div>
                    </div>
                </fieldset>
            </form>
        </div>
    </div>

</div>

using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Configuration;

public partial class incident_incidentdetails : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{


    if (!Page.IsPostBack)
    {
        LoadOptions();
    }
}

protected void LoadOptions()
{
    DataTable organisations = new DataTable();

    SqlConnection connection = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["ConnString"].ConnectionString);
    using (connection)
    {
        SqlDataAdapter adapter = new SqlDataAdapter("SELECT [OrganisationID], [OrganisationName], [OrganisationType] FROM [tblOrganisation], [pickOrganisationType] WHERE [tblOrganisation].[OrganisationTypeID] = [pickOrganisationType].[OrganisationTypeID] AND ([IsCurrent] = 1)", connection);

        adapter.Fill(organisations);

        DDLOrganisation.DataSource = organisations;
        DDLOrganisation.DataTextField = "OrganisationName";
        DDLOrganisation.DataValueField = "OrganisationID";
        DDLOrganisation.DataBind();

        //DDLOrganisation.SelectedIndex = DDLOrganisation.Items.IndexOf(DDLOrganisation.Items.FindByText("Name of Organisation"));
        DDLOrganisation.SelectedIndex = DDLOrganisation.Items.IndexOf(DDLOrganisation.Items.FindByValue("43"));

        DataView dv2 = (DataView)SqlDSOrganisationType.Select(DataSourceSelectArguments.Empty);
        DataRowView drv2 = dv2[0];

        TxtOrganisationType.Text = drv2["OrganisationType"].ToString();


        DataView dv = (DataView)SqlDSOrganisationAddress.Select(DataSourceSelectArguments.Empty);
        DataRowView drv = dv[0];


        TxtOrganisationAddressLine1.Text = drv["AddressLine1"].ToString();
        TxtOrganisationAddressLine2.Text = drv["AddressLine2"].ToString();
        TxtOrganisationAddressLine3.Text = drv["AddressLine3"].ToString();


    }
}


protected void DDLOrganisation_SelectedIndexChanged(object sender, EventArgs e)
{
    DataView dv2 = (DataView)SqlDSOrganisationType.Select(DataSourceSelectArguments.Empty);
    DataRowView drv2 = dv2[0];

    TxtOrganisationType.Text = drv2["OrganisationType"].ToString();


    DataView dv = (DataView)SqlDSOrganisationAddress.Select(DataSourceSelectArguments.Empty);
    DataRowView drv = dv[0];


    TxtOrganisationAddressLine1.Text = drv["AddressLine1"].ToString();
    TxtOrganisationAddressLine2.Text = drv["AddressLine2"].ToString();
    TxtOrganisationAddressLine3.Text = drv["AddressLine3"].ToString();


}





protected void SQLDSRecordPage_Selecting(object sender, SqlDataSourceSelectingEventArgs e)
{
    e.Command.Parameters["@RecordID"].Value = Request.QueryString["recordid"];
}



/*
SqlConnection connection = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["ConnString"].ConnectionString);
string selectedID = DDLOrganisation1.SelectedItem.Value;

SqlCommand theCommand = new SqlCommand     ("SELECT [AddressLine1], [AddressLine2], [AddressLine3], [Town], [County], [Postcode], [Telephone], [Fax], [Email] FROM [tblOrganisationAddress] WHERE ([OrganisationAddressID] = @OrganisationAddressID)", connection);
theCommand.Parameters.AddWithValue("@OrganisationAddressID", selectedID);
theCommand.CommandType = CommandType.Text;

using (SqlDataReader theReader = theCommand.ExecuteReader())
{
    if (theReader.HasRows)
    {
        // Get the first row
        theReader.Read();

        // Set the text box values
        //CustomerName.Text = theReader.GetString(0);
        TxtOrganisationAddressLine1.Text = theReader["AddressLine1"].ToString();
    }
} 




    DataView dv2 = (DataView)SqlDSOrganisationType.Select(DataSourceSelectArguments.Empty);
    DataRowView drv2 = dv2[0];

    TxtOrganisationType.Text = drv2["OrganisationType"].ToString();


    DataView dv = (DataView)SqlDSOrganisationAddress.Select(DataSourceSelectArguments.Empty);
    DataRowView drv = dv[0];


 //   TxtOrganisationAddressLine1.Text = drv["AddressLine1"].ToString();
    TxtOrganisationAddressLine2.Text = drv["AddressLine2"].ToString();
    TxtOrganisationAddressLine3.Text = drv["AddressLine3"].ToString();
    TxtOrganisationTown.Text = drv["Town"].ToString();
    TxtOrganisationCounty.Text = drv["County"].ToString();
    TxtOrganisationPostcode.Text = drv["Postcode"].ToString();
    TxtOrganisationTelephone.Text = drv["Telephone"].ToString();
    TxtOrganisationFax.Text = drv["Fax"].ToString();
    TxtOrganisationEmail.Text = drv["Email"].ToString();
}


}
    */
}

由于

萨姆

在页面加载期间触发的Dropdownlist SelectedIndexChanged重置选定的项目

0 个答案: