[英]Downloading file dynamically using caml query only not by get folder method
I want to download multiple files say by using regex where user provides the file name through a variable and that gets passed in caml query and it can iterate through a list url. 我想通过使用正则表达式来下载多个文件,其中用户通过变量提供文件名并且在caml查询中传递它并且它可以遍历列表URL。 A bit new on this caml query zone.
这个caml查询区有点新。 Any advice how to achieve it?
有什么建议如何实现呢?
camlQuery.ViewXml = @"<View>
<Query>
<Where><Eq><FieldRef Name='FileLeafRef' /><Value Type='File'>" + fileToDownload + @"</Value></Eq></Where>
</Query>
<ViewFields><FieldRef Name='FileRef' /><FieldRef Name='FileLeafRef' /></ViewFields>
</View>";
Web web = clientContext.Web;
clientContext.Load(web);
clientContext.Load(web.Lists);
List list = clientContext.Web.GetList(listUrl);
//clientContext.Load(list);
//clientContext.ExecuteQuery();
ListItemCollection listItems = list.GetItems(camlQuery);
clientContext.Load(listItems);
clientContext.ExecuteQuery();
foreach (var item in listItems)
{
if (item.FileSystemObjectType == FileSystemObjectType.File)
{
Console.WriteLine("This is file");
}
else if (item.FileSystemObjectType == FileSystemObjectType.Folder)
{
Console.WriteLine("This is folder");
}
camlQuery.ViewXml = @"<View>
<Query>
<Where><Eq><FieldRef Name='FileLeafRef' /><Value Type='File'>" + fileToDownload + @"</Value></Eq></Where>
</Query>
<ViewFields><FieldRef Name='FileRef' /><FieldRef Name='FileLeafRef' /></ViewFields>
</View>";
Web web = clientContext.Web;
clientContext.Load(web);
clientContext.Load(web.Lists);
List list = clientContext.Web.GetList(listUrl);
//clientContext.Load(list);
//clientContext.ExecuteQuery();
ListItemCollection listItems = list.GetItems(camlQuery);
clientContext.Load(listItems);
clientContext.ExecuteQuery();
foreach (var item in listItems)
{
if (item.FileSystemObjectType == FileSystemObjectType.File)
{
Console.WriteLine("This is file");
}
else if (item.FileSystemObjectType == FileSystemObjectType.Folder)
{
Console.WriteLine("This is folder");
}
I need to download the file from matching pattern on FiletoDownload variable like if its . 我需要从FiletoDownload变量上的匹配模式下载文件,如果它。 it should download all files.
它应该下载所有文件。
Here is the code snippet for your reference: 以下是供您参考的代码段:
ListItemCollection listItems = list.GetItems(camlQuery);
clientContext.Load(listItems);
clientContext.ExecuteQuery();
foreach (var item in listItems)
{
if (item.FileSystemObjectType == FileSystemObjectType.File)
{
Console.WriteLine("This is file");
clientContext.Load(item.File);
clientContext.ExecuteQuery();
var fileRef = item.File.ServerRelativeUrl;
var fileInfo = Microsoft.SharePoint.Client.File.OpenBinaryDirect(clientContext, fileRef);
var fileName = Path.Combine(@"D:\", (string)item.File.Name);
using (var fileStream = System.IO.File.Create(fileName))
{
fileInfo.Stream.CopyTo(fileStream);
}
}
else if (item.FileSystemObjectType == FileSystemObjectType.Folder)
{
Console.WriteLine("This is folder");
}
}
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