MOSS的RTF字段的上传图片存在缺陷，上传图片必须填写站点上的图片Url才能上传，这样用户操作起来很不方便，为了方便用户使用，你可以自定义RTF类型的字段，也可以重写上传图片的对话框。
下面介绍一下重写上传图片对话框的操作。
1、修改form.js
将原来的的图片上传对话框替换掉。
在form.js文件中找到RTE_ModalDialog方法，将/_layouts/RteDialog.aspx 替换成 /_layouts/Sinopec/AppPages/UploadFile.aspx
2、新建上传页面
编写UploadFile.aspx页面，将图片上传到共享文档中，把图片的路径返回给RTF字段的编辑框。
UploadFile.aspx的前台页面如下：
<%@ Assembly Name="Microsoft.SharePoint.ApplicationPages" %>
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="UploadFile.aspx.cs" Inherits="ModifyRTFImage.AppPage.UploadFile,ModifyRTFImage, Version=1.0.0.0, Culture=neutral, PublicKeyToken=956dc7e41e8e7b7d" %>
<%@ Register Tagprefix="SharePoint" Namespace="Microsoft.SharePoint.WebControls" Assembly="Microsoft.SharePoint, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>
<%@ Register Tagprefix="Utilities" Namespace="Microsoft.SharePoint.Utilities" Assembly="Microsoft.SharePoint, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>
<%@ Import Namespace="Microsoft.SharePoint" %>
<script src="/_layouts/<%=System.Threading.Thread.CurrentThread.CurrentUICulture.LCID%>/core.js"></script>
<script src="/_layouts/<%=System.Threading.Thread.CurrentThread.CurrentUICulture.LCID%>/form.js"></script>
<html dir="<SharePoint:EncodedLiteral runat='server' text='<%$Resources:wss,multipages_direction_dir_value%>' EncodeMethod='HtmlEncode'/>">
<!--TOOLBAR_EXEMPT-->
<head>
<base target="_self" />
<SharePoint:CssLink ID="CssLink1" runat="server"/>
<title><asp:Literal id="PageTitle" runat="server"/></title>
<style type="text/css">
body
{
margin-left:10px;
}
input
{
font-family:Verdana;
font-size:8pt;
}
td
{
font-family:Verdana;
font-size:8pt;
}
button
{
font-family:Verdana;
font-size:8pt;
width:<asp:Label id="ButtonWidth" text="<%$Resources:wss,RteDialog_ButtonWidth%>" runat="server"/>;
}
</style>
<script language="JavaScript">
<!--
function onWindowKeyDownHandler()
{
if (event.keyCode == 27)
{
window.close();
}
}
function onLoadHandler()
{
document.pageName =
"<asp:Literal id="PageName" runat="server"/>";
var arg = window.dialogArguments;
if (document.pageName == "CreateLink" &&
arg != null)
{
//StrFirst.value = arg.text;
document.allowRelativeLinks = arg.allowRelativeLinks;
}
RTE_DialogResize();
}
function ok_OnClick()
{
var arr = new Array();
var valid = 1;
arr[0] = "Test";//StrFirst.value;
//code
arr[1] = document.getElementById('lblUrl').innerText; // StrSecond.value;
if (document.pageName == "InsertTable")
{
if (arr[0] < 1 ||
arr[1] < 1 ||
isNaN(Number(arr[0])) ||
isNaN(Number(arr[1])))
{
alert("<SharePoint:EncodedLiteral runat='server' text='<%$Resources:wss,RteDialog_RowColValid%>' EncodeMethod='EcmaScriptStringLiteralEncode'/>");
valid = 0;
}
if (valid && arr[0] * arr[1] > 625)
{
alert("<SharePoint:EncodedLiteral runat='server' text='<%$Resources:wss,RteDialog_RowColLimit%>' EncodeMethod='EcmaScriptStringLiteralEncode'/>");
valid = 0;
}
}
if (document.pageName == "CreateLink")
{
if (!IsSafeHrefAlert(arr[1], document.allowRelativeLinks))
{
valid = false;
}
}
if (valid)
{
window.returnValue = arr;
window.close();
}
}
-->
</script>
</head>
<body class="ms-BuilderBackground" onkeydown="onWindowKeyDownHandler();" onload="onLoadHandler();">
<center>
<form runat="server">
<table style="border-top: none;" cellspacing="5" id="DialogTable">
<tr style="display:none">
<td><label for="StrFirst"><asp:Label id="FirstCaption" runat="server"/></label></td>
<td><input id="StrFirst" type="text" size=30 maxlength=1024></input></td>
</tr>
<tr style="display:none">
<td><label for="StrSecond"><asp:Label id="SecondCaption" runat="server"/></label></td>
<td><input id="StrSecond" type="text" size=30 maxlength=1024></input></td>
</tr>
<tr>
<td><label>Address:</label></td>
<td>
<table>
<tr>
<td><asp:FileUpload ID="uploadPic" runat="server" /></td>
<td><asp:Button ID="Button1" runat="server" Text="上传" onclick="Button1_Click" /></td>
</tr>
<tr>
<td>
图片地址：
</td>
<td><asp:Label id="lblUrl" runat="server"/></td>
</tr>
</table>
</td>
</tr>
<tr><td align="<SharePoint:EncodedLiteral runat='server' text='<%$Resources:wss,multipages_direction_right_align_value%>' EncodeMethod='HtmlEncode'/>" colspan="2">
<button id="OKButton" onclick="ok_OnClick()" class="ms-ButtonHeightWidth" type="submit"><asp:Label id="OkButton" text="<%$Resources:wss,RteDialog_OK%>" runat="server"/></button>
<button id="CancelButton" class="ms-ButtonHeightWidth" onclick="window.close();"><asp:Label id="CancelButton" text="<%$Resources:wss,RteDialog_Cancel%>" runat="server"/></button>
</td></tr>
</table>
</form>
</center>
<br/>
</body>
</html>
UploadFile.aspx的后台代码如下：
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 System.IO;
using Microsoft.SharePoint;
namespace ModifyRTFImage.AppPage
{
public partial class UploadFile : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
if (this.uploadPic.HasFile)
{
//获取上传文件的信息
string name = uploadPic.PostedFile.FileName;
string fileContentType = uploadPic.PostedFile.ContentType;
//将图片写到文档库中
if (fileContentType == "image/bmp" || fileContentType == "image/gif" || fileContentType == "image/pjpeg")
{
using (SPWeb web = SPContext.Current.Web)
{
try
{
SPDocumentLibrary listImage = (SPDocumentLibrary)web.Lists[new Guid("32DEEFEE-40AD-47A0-B2CB-50C56F76B88D")];
string folderUrl = listImage.RootFolder.ServerRelativeUrl + "/" + name.Split('\\')[name.Split('\\').Length - 1];
Stream fileNew = new FileStream(name, FileMode.Open);
if (!web.AllowUnsafeUpdates)
web.AllowUnsafeUpdates = true;
listImage.RootFolder.Files.Add(folderUrl, fileNew, true);
this.lblUrl.Text = folderUrl;
}
catch { }
finally
{
web.AllowUnsafeUpdates = false;
}
}
}
}
}
}
}
