/// <summary>
/// Demonstrates how to perform read and write
/// operations on a file in SuperDog
/// </summary>
protected void ReadWriteDemo(Dog dog, Int32 fileId)
{
if ((null == dog) || !dog.IsLoggedIn())
{
return;
}
// Get a file object to a file in SuperDog.
// please note: the file object is tightly connected
// to its dog object. logging out from a dog also
// invalidates the file object.
// doing the following will result in an invalid
// file object:
// dog.login(...)
// DogFile file = dog.GetFile();
// dog.logout();
// Debug.Assert(file.IsValid()); will assert
DogFile file = dog.GetFile(fileId);
if (!file.IsLoggedIn())
{
// Not logged into a dog - nothing left to do.
return;
}
// get the file size
int size = 0;
DogStatus status = file.FileSize(ref size);
if (DogStatus.StatusOk != status)
{
return;
}
// read the contents of the file into a buffer
byte[] bytes = new byte[size];
status = file.Read(bytes, 0, bytes.Length);
if (DogStatus.StatusOk != status)
{
return;
}
// now let's write some data into the file
byte[] newBytes = new byte[] { 1, 2, 3, 4, 5, 6, 7 };
status = file.Write(newBytes, 0, newBytes.Length);
if (DogStatus.StatusOk != status)
{
return;
}
// and read them again
status = file.Read(newBytes, 0, newBytes.Length);
// restore the original contents
file.Write(bytes, 0, bytes.Length);
}
public static string ReadData()
{
DogFeature feature = DogFeature.Default;
using (Dog dog = new Dog(feature))
{
DogStatus status = dog.Login(VendorCode.Code, scope);
if ((null == dog) || !dog.IsLoggedIn())
{
return("请插入加密狗");
}
DogFile file = dog.GetFile(FileId);
if (!file.IsLoggedIn())
{
// Not logged into a dog - nothing left to do.
return("加载数据失败");
}
int size = 0;
status = file.FileSize(ref size);
if (DogStatus.StatusOk != status)
{
return("加载数据失败");
}
// read the contents of the file into a buffer
byte[] bytes = new byte[size];
status = file.Read(bytes, 0, bytes.Length);
if (DogStatus.StatusOk != status)
{
return("失败");
}
return(System.Text.Encoding.UTF8.GetString(bytes));
}
}
private void button2_Click(object sender, EventArgs e)
{
DogFeature feature = DogFeature.Default;
using (Dog dog = new Dog(feature))
{
DogStatus status = dog.Login(VendorCode.Code, scope);
if ((null == dog) || !dog.IsLoggedIn())
{
return;
}
DogFile file = dog.GetFile(FileId);
if (!file.IsLoggedIn())
{
// Not logged into a dog - nothing left to do.
return;
}
int size = 0;
status = file.FileSize(ref size);
if (DogStatus.StatusOk != status)
{
return;
}
// read the contents of the file into a buffer
byte[] bytes = new byte[size];
status = file.Read(bytes, 0, bytes.Length);
if (DogStatus.StatusOk != status)
{
return;
}
this.textBox4.Text = System.Text.Encoding.UTF8.GetString(bytes);
}
}
private void button1_Click(object sender, EventArgs e)
{
DogFeature feature = DogFeature.Default;
using (Dog dog = new Dog(feature))
{
DogStatus status = dog.Login(VendorCode.Code, scope);
if ((null == dog) || !dog.IsLoggedIn())
{
return;
}
DogFile file = dog.GetFile(FileId);
if (!file.IsLoggedIn())
{
// Not logged into a dog - nothing left to do.
return;
}
int size = 0;
status = file.FileSize(ref size);
if (DogStatus.StatusOk != status)
{
return;
}
byte[] newBytes = System.Text.Encoding.UTF8.GetBytes(this.textBox1.Text);//new byte[] { 1, 2, 3, 4, 5, 6, 7 };
status = file.Write(newBytes, 0, newBytes.Length);
if (DogStatus.StatusOk != status)
{
return;
}
// read the contents of the file into a buffer
byte[] bytes = new byte[size];
status = file.Read(bytes, 0, bytes.Length);
if (DogStatus.StatusOk != status)
{
return;
}
this.textBox2.Text = System.Text.Encoding.UTF8.GetString(bytes);
}
//textBox3.Text = dapi.WriteData(this.textBox1.Text.Trim());
//this.textBox2.Text = dapi.ReadDate();
//textBox3.SelectionStart = textBox3.TextLength;
//textBox3.ScrollToCaret();
//textBox3.Refresh();
}
/// <summary>
/// Demonstrates how to read and write to/from a
/// file at a certain file position
/// </summary>
protected void ReadWritePosDemo(Dog dog, Int32 fileId)
{
if ((null == dog) || !dog.IsLoggedIn())
{
return;
}
// firstly get a file object to a file.
DogFile file = dog.GetFile(fileId);
if (!file.IsLoggedIn())
{
// Not logged into dog - nothing left to do.
return;
}
// we want to write an int at the end of the file.
// therefore we are going to
// - get the file's size
// - set the object's read and write position to
// the appropriate offset.
int size = 0;
DogStatus status = file.FileSize(ref size);
if (DogStatus.StatusOk != status)
{
return;
}
// set the file pos to the end minus the size of int
file.FilePos = size - DogFile.TypeSize(typeof(int));
// now read what's there
int aValue = 0;
status = file.Read(ref aValue);
if (DogStatus.StatusOk != status)
{
return;
}
// write some data.
status = file.Write(int.MaxValue);
if (DogStatus.StatusOk != status)
{
return;
}
// read back the written value.
int newValue = 0;
status = file.Read(ref newValue);
if (DogStatus.StatusOk == status)
{
// restore the original data.
file.Write(aValue);
}
}
/// <summary>
/// Demonstrates how to read and write to/from a
/// file at a certain file position
/// </summary>
protected void ReadWritePosDemo(Dog dog, Int32 fileId)
{
if ((null == dog) || !dog.IsLoggedIn())
{
return;
}
Verbose("GetFileSize/FilePos Demo");
// firstly get a file object to a file.
DogFile file = dog.GetFile(fileId);
if (!file.IsLoggedIn())
{
// Not logged into dog - nothing left to do.
Verbose("Failed to get file object\r\n");
return;
}
Verbose("Reading contents of file: " + file.FileId.ToString());
Verbose("Retrieving the size of the file");
// we want to write an int at the end of the file.
// therefore we are going to
// - get the file's size
// - set the object's read and write position to
// the appropriate offset.
int size = 0;
DogStatus status = file.FileSize(ref size);
ReportStatus(status);
if (DogStatus.StatusOk != status)
{
Verbose("");
return;
}
Verbose("Size of the file is: " + size.ToString() + " Bytes");
Verbose("Setting file position to last int and reading value");
// set the file pos to the end minus the size of int
file.FilePos = size - DogFile.TypeSize(typeof(int));
// now read what's there
int aValue = 0;
status = file.Read(ref aValue);
ReportStatus(status);
if (DogStatus.StatusOk != status)
{
Verbose("");
return;
}
Verbose("Writing to file: 0x" + int.MaxValue.ToString("X2"));
// write some data.
status = file.Write(int.MaxValue);
ReportStatus(status);
if (DogStatus.StatusOk != status)
{
Verbose("");
return;
}
// read back the written value.
int newValue = 0;
Verbose("Reading written data");
status = file.Read(ref newValue);
ReportStatus(status);
if (DogStatus.StatusOk == status)
{
Verbose("Data read: 0x" + newValue.ToString("X2"));
}
// restore the original data.
file.Write(aValue);
Verbose("");
}
/// <summary>
/// Demonstrates how to perform read and write
/// operations on a file in SuperDog
/// </summary>
protected void ReadWriteDemo(Dog dog, Int32 fileId)
{
if ((null == dog) || !dog.IsLoggedIn())
{
return;
}
Verbose("Read/Write Demo");
// Get a file object to a file in SuperDog.
// please note: the file object is tightly connected
// to its dog object. logging out from a dog also
// invalidates the file object.
// doing the following will result in an invalid
// file object:
// dog.login(...)
// DogFile file = dog.GetFile();
// dog.logout();
// Debug.Assert(file.IsValid()); will assert
DogFile file = dog.GetFile(fileId);
if (!file.IsLoggedIn())
{
// Not logged into a dog - nothing left to do.
Verbose("Failed to get file object\r\n");
return;
}
Verbose("Reading contents of file: " + file.FileId.ToString());
Verbose("Retrieving the size of the file");
// get the file size
int size = 0;
DogStatus status = file.FileSize(ref size);
ReportStatus(status);
if (DogStatus.StatusOk != status)
{
Verbose("");
return;
}
Verbose("Size of the file is: " + size.ToString() + " Bytes");
// read the contents of the file into a buffer
byte[] bytes = new byte[size];
Verbose("Reading data");
status = file.Read(bytes, 0, bytes.Length);
ReportStatus(status);
if (DogStatus.StatusOk != status)
{
Verbose("");
return;
}
DumpBytes(bytes);
Verbose("Writing to file");
// now let's write some data into the file
byte[] newBytes = new byte[] { 1, 2, 3, 4, 5, 6, 7 };
status = file.Write(newBytes, 0, newBytes.Length);
ReportStatus(status);
if (DogStatus.StatusOk != status)
{
Verbose("");
return;
}
DumpBytes(newBytes);
// and read them again
Verbose("Reading written data");
status = file.Read(newBytes, 0, newBytes.Length);
ReportStatus(status);
if (DogStatus.StatusOk == status)
{
DumpBytes(newBytes);
}
// restore the original contents
file.Write(bytes, 0, bytes.Length);
Verbose("");
}