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| class TUpdateImage
{
///
///This class enable the application to communicate with
///The database, This class deal only with table that has 4 fields
///Particulary a generic table t_user
///
private string m_cmdSelect = "";
private string m_cmdInsert = "";
private string m_cmdUpdate = "";
// This flag ensures that the user does not attempt
// to restart the command or close the form while the
// asynchronous command is executing.
//public bool isExecuting;
private string m_ID = "";
private string m_chemain = "";
private byte[] m_chunk;
//Hold the parameter name that is use in all sql server procedure
private SqlParameter prmID;
private SqlParameter prmChunk;
private SqlParameter prmchemain;
private SqlParameter prmPtrval;
public TUpdateImage(string cmdSelect, string cmdInsert, string cmdUpdate, string cmdDelete)
{
this.prmID = new SqlParameter("@img_mbr_id", SqlDbType.Int);
this.prmchemain = new SqlParameter("@img_ch_name", SqlDbType.VarChar, 20);
this.prmChunk = new SqlParameter("@img_photo", SqlDbType.Binary, Principal.BUFFER_LENGTH);
this.prmPtrval = new SqlParameter("@Ptrval", SqlDbType.Binary, 16);
this.prmPtrval.Direction = ParameterDirection.Output;
this.cmdSelect = cmdSelect;
this.cmdUpdate = cmdUpdate;
}
public string ID
{
set { m_ID = value; }
get { return m_ID; }
}
public byte[] Chunk
{
set { m_chunk = value; }
get { return m_chunk; }
}
public string cmdSelect
{
set { m_cmdSelect = value; }
get { return m_cmdSelect; }
}
public string cmdUpdate
{
set { m_cmdUpdate = value; }
get { return m_cmdUpdate; }
}
public string chemain
{
get
{
return m_chemain;
}
set
{
m_chemain = value;
}
}
public DataSet GetData(string strAdresse2)
{
SqlConnection cn = new SqlConnection(Principal.GetConnectionString());
SqlCommand cmd = new SqlCommand(cmdSelect, cn);
cmd.CommandType = CommandType.StoredProcedure;
DataSet ds = new DataSet("t_user");
SqlDataAdapter sqlDta = new SqlDataAdapter(cmd);
try
{
//prmAdresse2.Value = strAdresse2;
//cmd.Parameters.Add(prmAdresse2);
//Fill the dataset
sqlDta.Fill(ds);
return ds;
}
catch (SqlException ex)
{
Principal.ProcessError(ex);
return null;
}
finally
{
if (cn != null) cn.Close();
if (ds != null) ds.Dispose();
if (cmd != null)
{
cmd.Parameters.Clear();
cmd.Dispose();
}
if (sqlDta != null) sqlDta.Dispose();
}
}
public DataSet GetData()
{
SqlConnection cn = new SqlConnection(Principal.GetConnectionString());
SqlCommand cmd = new SqlCommand(cmdSelect, cn);
cmd.CommandType = CommandType.StoredProcedure;
DataSet ds = new DataSet("t_Image_sign");
SqlDataAdapter sqlDta = new SqlDataAdapter(cmd);
try
{
//Fill the dataset
sqlDta.Fill(ds);
return ds;
}
catch (SqlException ex)
{
Principal.ProcessError(ex);
return null;
}
finally
{
if (cn != null) cn.Close();
if (ds != null) ds.Dispose();
if (cmd != null) cmd.Dispose();
if (sqlDta != null) sqlDta.Dispose();
}
}
public void Add()
{
SqlConnection cn = new SqlConnection(Principal.GetConnectionString());
SqlCommand cmd = new SqlCommand(m_cmdInsert, cn);
cmd.CommandType = CommandType.StoredProcedure;
//Set SqlParameter value
SetParameterValue();
//Add parameters to the command
AddParameters(cmd);
//Set the parameters values
try
{
cn.Open();
cmd.CommandText = "dbo.extimage_sign_insert";
cmd.ExecuteNonQuery();
}
catch (SqlException ex)
{
if (cn != null) cn.Close();
}
finally
{
if (cn != null)
{
cn.Close();
}
if (cmd != null)
{
cmd.Parameters.Clear();
cmd.Dispose();
}
}
}
public int AddImage()
{
SqlConnection cn = new SqlConnection(Principal.GetConnectionString());
SqlCommand cmd = new SqlCommand(m_cmdInsert, cn);
cmd.CommandType = CommandType.StoredProcedure;
//Set SqlParameter value
SetParameterValue();
//Add parameters to the command
AddParameters(cmd);
//Set the parameters values
int ret = 0;
try
{
cn.Open();
cmd.CommandText = "dbo.extimage_sign_insert";
ret = cmd.ExecuteNonQuery();
return ret;
}
catch (SqlException ex)
{
if (cn != null) cn.Close();
return ret;
}
finally
{
if (cn != null)
{
cn.Close();
}
if (cmd != null)
{
cmd.Parameters.Clear();
cmd.Dispose();
}
}
}
public int DeleteImage()
{
SqlConnection cn = new SqlConnection(Principal.GetConnectionString());
SqlCommand cmd = new SqlCommand(m_cmdInsert, cn);
cmd.CommandType = CommandType.StoredProcedure;
//Set SqlParameter value
prmID.Value = this.ID;
//Add parameters to the command
cmd.Parameters.Add(prmID);
//Set the parameters values
int ret = 0;
try
{
cn.Open();
cmd.CommandText = "dbo.proc_image_sign_delete";
ret = cmd.ExecuteNonQuery();
return ret;
}
catch (SqlException ex)
{
if (cn != null) cn.Close();
return ret;
}
finally
{
if (cn != null)
{
cn.Close();
}
if (cmd != null)
{
cmd.Parameters.Clear();
cmd.Dispose();
}
}
}
public int Update()
{
SqlConnection cn = new SqlConnection(Principal.GetConnectionString());
SqlCommand cmd = new SqlCommand(cmdUpdate, cn);
cmd.CommandType = CommandType.StoredProcedure;
//Set SqlParameter value
SetParameterValue();
//Add parameters to the command
AddParameters(cmd);
//Set the parameters values
try
{
cn.Open();
return cmd.ExecuteNonQuery();
}
catch (SqlException ex)
{
Principal.ProcessError(ex);
return -2;
}
finally
{
if (cn != null)
{
cn.Close();
}
if (cmd != null)
{
cmd.Parameters.Clear();
cmd.Dispose();
}
}
}
private void SetParameterValue()
{
//Set SqlParameter value
prmID.Value = m_ID;
prmChunk.Value = m_chunk;
prmchemain.Value = m_chemain;
}
private void AddParameters(SqlCommand cmd)
{
cmd.Parameters.Add(prmID);
cmd.Parameters.Add(prmChunk);
cmd.Parameters.Add(prmchemain);
}
~TUpdateImage()
{
prmID = null;
prmChunk = null;
prmchemain = null;
}
} |
Insérer une Image dans une BDD SQL Server
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