MS MVP 请进：如何調用在ASP.NET的C# Script中，用定義的控件?

yxdh 2003-03-22 01:52:20

<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.SqlClient" %>

<html>

<script language="C#" runat="server">

protected void Page_Load(Object sender, EventArgs e)
{
SqlConnection myConnection = new SqlConnection("server=(local)\\NetSDK;database=pubs;Trusted_Connection=yes");
SqlDataAdapter myCommand = new SqlDataAdapter("select * from Authors", myConnection);

myConnection.Open();

DataSet ds = new DataSet("Report");

myCommand.Fill(ds, "作者");

myConnection.Close();

MyDataGrid.DataSource=ds.Tables["作者"].DefaultView;
MyDataGrid.DataBind();

我想在这里用my.dll里的函数该怎么做？

}

</script>
<body>

<h3><font face="宋体">DataGrid 控件的简单选择</font></h3>

<ASP:DataGrid id="MyDataGrid" runat="server"
Width="700"
BackColor="#ccccff"
BorderColor="black"
ShowFooter="false"
CellPadding=3
CellSpacing="0"
Font-Name="宋体"
Font-Size="8pt"
HeaderStyle-BackColor="#aaaadd"
EnableViewState="false"
/>
<OBJECT id="print" classid="http:my.dll#my.init" Width="100%" Height="220" VIEWASTEXT></OBJECT>

</body>
</html>

...全文

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yxdh 2003-03-23

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It works!

saucer 2003-03-23

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Response.Write("<xml id='xmldoc'>" + result + "</xml>");
Response.Write("<script language=javascript>function window.onload(){document.all('print').test(xmldoc.xml);}</" + "script>");

yxdh 2003-03-23

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问题错不多已解决：我在页面中加了如下代码
XmlDataDocument xmlDoc = new XmlDataDocument(ds);
XslTransform xslTran = new XslTransform();
xslTran.Load("http://localhost/final/RemotePrint.xsl");
StringWriter sw = new StringWriter();
xslTran.Transform(xmlDoc, null, sw);
string result = sw.ToString();
Response.Write("<script language=javascript>function window.onload(){var XmlStr='"+result+"';document.all('print').test(XmlStr);}</" + "script>");

在my.dll用doc.LoadXml(XmlStr);

当只有两条纪录时，是通过的，但如果是30条时就不行了，难道是字符串太长了？
有解决的方法吗？

yxdh 2003-03-23

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Actually, I want to let the coder make up the data set in the web code
using the DataSet, and therefor I can let my XmlDocument in my dll load the result in my style.That it is!

yxdh 2003-03-23

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how to serialize my DataSet into an xml island? can you give a example?
I'm a new comer.Sorry for troubling you so much!

I want to do follow things in my dll :

XmlDataDocument xmlDoc = new XmlDataDocument(ds);
XslTransform xslTran = new XslTransform();
xslTran.Load("my.xsl");
XmlDocument doc = new XmlDocument();
doc.Load(xslTran.Transform(xmlDoc, null));

can you give me a solution to make it work?
Very glad to come across you here! Best wishes!

saucer 2003-03-23

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serialize your DataSet into an xml island, and change your dll to read from a xml string or dom document on the client side

yxdh 2003-03-23

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非常感谢saucer(思归, MS .NET MVP)的热心帮助
希望能继续探讨一下未决问题：

如果我想传的值是DataSet类型的ds,能实现吗？
我用
Response.Write("<script language=javascript>function window.onload(){ document.all('print').Load("+ds+");}</" + "script>");

出错显示：System未定义

saucer 2003-03-22

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Response.Write("<script language=javascript>function window.onload(){ var date= new Date('" + System.DateTime.Now + "'); document.all('point').Load(date);}</" + "script>");

yxdh 2003-03-22

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因为my.dll是window控件，用了System.Windows.Forms
所以在web中引用不了，请高人指教！

yxdh 2003-03-22

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第一种找不到对象呀，第二种myparam可以是my.dll内的属性吗?
怎样传值初始化我的控件，或者自动调用my.dll内中的方法呢？

用<input type="button" name="Submit2" value="载入数据"
onclick="print.Load(date);">可以调用my.dll内的方法，但是
是手动的

saucer 2003-03-22

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you cannot call client side script in server side code, try outputting something like

Response.Write("<script language=javascript>function window.onload(){print.SomeProperty='" + SomethingYouWantToSet + "'; print.SomeMethod();}</" + "script>");

or

<OBJECT id="print" classid="http:my.dll#my.init" Width="100%" Height="220" VIEWASTEXT>
<param id="myparam" runat="Server" />
</OBJECT>

then in your code, do
myparam.Attributes["value"] = "123";

yxdh 2003-03-22