public static System.IO.Stream ImportImage(string fileLeafRef)
{
System.IO.Stream stream = null;
var spContext = SharePointContextProvider.Current.GetSharePointContext(CurrentHttpContext);
using (var clientContext = spContext.CreateUserClientContextForSPHost())
{
if (clientContext != null)
{
List photoList = clientContext.Web.GetList("/sites/SD1/SiteAssets/");
CamlQuery camlQuery = new CamlQuery();
camlQuery.ViewXml = @"<View Scope='Recursive'>
<Query>
<Where>
<Eq>
<FieldRef Name='FileLeafRef'></FieldRef>
<Value Type='Text'>" + fileLeafRef + @"</Value>
</Eq>
</Where>
</Query>
</View>";
ListItemCollection photoCollection = photoList.GetItems(camlQuery);
clientContext.Load(photoCollection);
clientContext.ExecuteQuery();
ListItem item = photoCollection.ElementAt(0);
File file = item.File;
ClientResult <System.IO.Stream> data = file.OpenBinaryStream();
clientContext.Load(file);
clientContext.ExecuteQuery();
stream = data.Value;
//Wait for stream to get Executed by SharePoint
bool isLong = false;
while (isLong == false)
{
isLong = data.Value.Length is long;
}
//Wait for stream to get Executed by SharePoint
}
return(stream);
}
}