Resizing images without loss of quality in sharepoint

Let’s see the code that makes clean resizing. This code doesn’t use GetThumbnailImage method and operates therefore on full size image. Also you can see that this code tries to save as much quality as possible.


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public string ResizeImage(Stream fromStream,string fileName,int newWidth, int newHeight )
{

System.Drawing.Image image = System.Drawing.Image.FromStream(fromStream);

Bitmap thumbnailBitmap = new Bitmap(newWidth, newHeight);


Graphics thumbnailGraph = Graphics.FromImage(thumbnailBitmap);

thumbnailGraph.CompositingQuality = CompositingQuality.HighQuality;

thumbnailGraph.SmoothingMode = SmoothingMode.HighQuality;

thumbnailGraph.InterpolationMode = InterpolationMode.HighQualityBicubic;



Rectangle imageRectangle = new Rectangle(0, 0, newWidth, newHeight);

thumbnailGraph.DrawImage(image, imageRectangle);



thumbnailBitmap.Save(Server.MapPath(@"/_layouts/images/" + fileName), ImageFormat.Jpeg);



thumbnailGraph.Dispose();

thumbnailBitmap.Dispose();

image.Dispose();

return "../../_layouts/images/" + fileName;

}
You have call your newly created method as follows
SPList lstEvents = web.Lists["Events"];
int id=10;
SPListItem item = lstEvents.GetItemById(id);

string path=ResizeImage(item.File.OpenBinaryStream(), "40_40_resized_image.jpg", 40, 40)

How to insert sharepoint user to a sharepoint user Group in c#

using Microsoft.SharePoint;


public void AddUserToSPGroup(String _UserName, string _GroupName)
{
try
{
SPSite site = new SPSite(ConfigurationManager.AppSettings["SITE_URL"].ToString());
SPWeb web = site.AllWebs[ConfigurationManager.AppSettings["WEB_SITE"].ToString()];

//SPUser spUser = web.AllUsers[domain + "\\" + userName];
SPUser spUser = web.AllUsers["ad:" + _UserName];

//Open group
SPGroup spGroup = web.SiteGroups[_GroupName];

//Add and update group with new user
web.AllowUnsafeUpdates = true;
spGroup.AddUser(spUser.LoginName, spUser.Email, spUser.Name, "Added by UserControl");
spGroup.Update();
}
catch (Exception ex)
{
lblUserList.Text = ex.Message.ToString();
}
}

How to Send SMS - SMPP in c#

How to Read the Url of a Web page dynamically in c#

You can get the the url of the currently viewing web page using


HttpContext.Current.Request.ServerVariables["URL"].ToString() ;

How To Generate Random Numbers And Strings in c#

This function can be effectively used for Gnerating Random strings of any length


public string RandomStrings()
{

StringBuilder builder = new StringBuilder();
Random random = new Random();
char ch;
for (int i = 0; i < 10; i++)
{
ch = Convert.ToChar(Convert.ToInt32(Math.Floor(26 * random.NextDouble() + 65)));
builder.Append(ch);
}

return builder.ToString();

}


You can use The following code to generate random numbers

private string RandomString(int size, bool lowerCase)
{
StringBuilder builder = new StringBuilder();
Random random = new Random();
char ch ;
for(int i=0; i==size; i++)
{
ch = Convert.ToChar(Convert.ToInt32(Math.Floor(26 * random.NextDouble() + 65))) ;
builder.Append(ch);
}
if(lowerCase)
return builder.ToString().ToLower();
return builder.ToString();
}

How to change Active directory user properties in c#

// Create a DirectorySearcher object using the user name as the LDAP search filter. If using a directory other than Exchange, use sAMAccountName instead of mailNickname.
DirectorySearcher searcher = new DirectorySearcher("(cn=" + _UserName + ")");

// Search for the specified user.
SearchResult result = searcher.FindOne();

// Make sure the user was found.
Response.Write(_UserName);
// Create a DirectoryEntry object to retrieve the collection of attributes (properties) for the user.
DirectoryEntry user = result.GetDirectoryEntry();

domain = ConfigurationManager.AppSettings["DOMAIN"].ToString();

user.Username = domain + "\\" + ConfigurationManager.AppSettings["USERNAME"].ToString();
user.Password = ConfigurationManager.AppSettings["PASSWORD"].ToString();
user.AuthenticationType = AuthenticationTypes.Secure;



if (details[1] != "")
{
user.Properties["TelephoneNumber"].Value = details[1];
}

if (details[2] != "")
{
user.Properties["streetAddress"].Value = details[2];
}

if (details[3] != "")
{
user.Properties["Description"].Value = details[3];
}

if (details[4] != "")
{
user.Properties["mail"].Value = details[4];
}
if (details[8] != "")
{
user.Properties["sn"].Value = details[8];//last name
}
if (details[9] != "")
{
user.Properties["displayName"].Value = details[9];//display name
}
if (details[10] != "")
{
user.Properties["givenName"].Value = details[0];//1st name
}
if (details[11] != "")
{
user.Properties["physicalDeliveryOfficeName"].Value = details[11];//office phone
}
if (details[12] != "" && details[13] != "")
{
user.Properties["co"].Value = details[12];//country name
user.Properties["c"].Value = details[13];//country code
}

user.CommitChanges();

if (details[5] != "" & details[6] != "")
{
if (details[5].Equals(details[6]))
{
user.Invoke("SetPassword", new object[] { details[5] });
user.CommitChanges();

}
else
{
lblUserList.ForeColor = Color.Red;
lblUserList.Text = "Password Mismatch";
return false;
}
}

// Clean up.
searcher.Dispose();
result = null;
user.Close();

How to insert Active directory users to an Active directory Group in c#

public void AddUserToADGroup(DirectoryEntry de,string _Group,string _UserName)
{
DirectorySearcher ds = new DirectorySearcher(de);
ds.Filter = "(objectClass=user)";
ds.Sort.Direction = System.DirectoryServices.SortDirection.Ascending;
ds.SearchScope = System.DirectoryServices.SearchScope.Subtree;
ds.PageSize = 4000;

string name = "";
try
{
SortedList objSortedList = new SortedList();
foreach (SearchResult result in ds.FindAll())
{
DirectoryEntry deTemp = result.GetDirectoryEntry();
name = deTemp.Name;
try
{
name = deTemp.Properties["cn"].Value.ToString();
if (name.Equals(_UserName))
{
DirectoryEntry objGrp = de.Children.Find("CN=" + _Group);

//adding new user to group
if (objGrp.Name != "")
{
objGrp.Invoke("Add", new object[] { deTemp.Path.ToString() });
objGrp.CommitChanges();
deTemp.CommitChanges();
de.CommitChanges();
}
}
}
catch (Exception ex)
{
ex.Message.ToString();
}
}
//FillGroup(ddlEmpName);
}
catch (Exception ex)
{
lblUserList.Text = ex.ToString();
}


}