Question

首先，请原谅我的英语。我用Textbox和AutoCompleteExtender控件创建了一个用户控件，它运行正常。现在，我想反映我的文本框类似于下拉列表。当我将用户控件保留在GridView中并通过隐藏字段访问该值时，我得到“0”值。如何在页面中读取隐藏的字段值？

UserControl.ascx

<%@ Control Language="C#" AutoEventWireup="true" Code File="UserControl.ascx.cs"
    Inherits="UserControl" %> <%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %> 

<script type="text/java script">
    function DispValue(sender, e) {
        alert(e.get_value() + "   : user control");
        document.getElementById(hiddenFieldName.Client ID).value = e.get_value();       
    }
     </script> 
<asp:Hidden Field ID="hdnValue" runat="server" Value="0" /> 
<asp:Text Box ID="txtName" runat="server" Text=""> </asp:Text Box> 
<cc1:AutoCompleteExtender ID="ACEName" TargetControlID="txtName" runat="server"
        CompletionInterval="10" MinimumPrefixLength="1" Service Method="Get Name"
        Service Path="UserControlWebServices.asmx" OnClientItemSelected="DispValue">      
</cc1:AutoCompleteExtender>

UserControl.ascx.cs

public partial class UserControl : System.Web.UI.UserControl 
{    
    protected void page_load(object sender, EventArgs e)
    {
        ACEName.ContextKey = "1";
    }

    public String SelectedValue
    {
        get { return this.hdnValue.Value; }
    }

    public String SelectedText
    {
        get { return this.Name.Text; }
    } 
}

MyAspxPage.aspx

<%@ Register Src="~/UserControl.ascx" TagPrefix="puc" TagName="UserControl" %> <head runat="server">
    <title></title> </head> <body>
    <form id="form1" runat="server">  
    <asp:Script Manager ID="ScriptManager1" runat="server" EnablePageMethods="true">
    </asp:Script Manager>
    <asp:Grid View ID="gvPatient" runat="server" AutoGenerateColumns="false" OnDataBound="GridPatient_DataBound">
        <Columns>
            <asp:Template Field>
                <Header Template>
                    Patient Name
                </Header Template>
                <Item Template>
                    <puc:UserControl ID="pucPatient1" runat="server" />
                </Item Template>
            </asp:Template Field>   </Columns>
    </asp:Grid View>
    <asp:Button ID="btnSave" runat="server" OnClick="Save" Text="Save" OnClientClick="return StartUpload();" />
    </form> 
  </body> 
</HTML>

MyAspxPage.cs

    DataTable dt;
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            dt = new DataTable();
            dt.Columns.Add("col1");
            dt.Columns.Add("col2");
            dt.Columns.Add("col3");
            dt.Columns.Add("col4");
            dt.Columns.Add("col5");
            dt.Columns.Add("col6");


            if (Session["dt"] == null)
            {
                dt = AddRow(dt);
                gvPatient.DataSource = dt;
                gvPatient.DataBind();
                Session["dt"] = dt;
                //ViewState["dt"] = dt;
            }
            else
                dt = (DataTable)Session["dt"];//ViewState["dt"];

        }
    }

    private DataTable AddRow(DataTable dt)
    {
        for (int i = 0; i < 5; i++)
        {
            DataRow dr = dt.NewRow();
            dr[0] = "";
            dr[1] = "";
            dr[2] = "";
            dr[3] = "";
            dr[4] = "";
            dr[5] = "";
            dt.Rows.Add(dr);
        }
        return dt;
    }

 protected void GridPatient_DataBound(object sender, EventArgs e)
    {
        foreach (GridViewRow item in gvPatient.Rows)
        {
            UserControl ptuc = (UserControl)item.FindControl("pucPatient1");
            string id = ptuc.SelectedValue;
         }
    }

 public void Save(object sender, EventArgs e)
    {
        foreach (GridViewRow item in gvPatient.Rows)
        {
            if (item.RowType == DataControlRowType.DataRow)
            {
                UserControl ptuc = (UserControl)item.FindControl("pucPatient1");
                string id = ptuc.SelectedValue;//getting null value.
                string patientName = ptuc.SelectedText;
             }
        }    }

这就是我所做的一切。

我坚持这个请帮助我。

Sharanamma

Answer 1

嗨朋友们   感谢您的宝贵回复，
  实际上它的工作正常，但UserControl的变化很小   客户选择的事件方，我，e


UserControl.ascx 功能DispValue（发件人，e）{
          var source = sender.get_id（）;
          var lastIndex = source.lastIndexOf（“_”）;
          var replacement = source.substring（0，lastIndex + 1）;
          var hdnId = replace +“hdnPatientNumber”;
          document.getElementById（hdnId）.value = e.get_value（）;
      }

UserControl.ascx.cs
public String SelectedValue       {
          get {return Request.Form [this.hdnPatientNumber.UniqueID];   }
      }

感谢大家，恭喜，Sharanamma。

GridView中自动完成用户控件的SelectedValue属性

1 个答案: