protected void GrdViewDocs_ItemCommand(object sender, GridCommandEventArgs e)
{
if (e.CommandName == "Select")
{
GridDataItem dataitem = e.Item as GridDataItem;
//DataTable dtcon = CM_Main.SelectJob("CASE11", dataitem["REQUEST_ID"].Text, "", "", "", "", System.DateTime.Now);
//grdRequest.DataSource = dtcon;
//grdRequest.DataBind();
// int idx = dataitem["REQUEST_ID"].Text;
// Label lbl = dataitem["ID"].Text;
System.Data.OracleClient.OracleConnection conn = new System.Data.OracleClient.OracleConnection(ConfigurationManager.ConnectionStrings["CGConnectionString"].ToString());
System.Data.OracleClient.OracleCommand myCommand = new System.Data.OracleClient.OracleCommand("SELECT * FROM wf_cm_docs_jobwise_blob WHERE ID = '" + dataitem["ID"].Text + "'", conn);
conn.Open();
System.Data.OracleClient.OracleDataReader myReader = myCommand.ExecuteReader(System.Data.CommandBehavior.Default);
try
{
while (myReader.Read())
{
System.Data.OracleClient.OracleLob myLob = myReader.GetOracleLob(myReader.GetOrdinal("DOCUMENT"));
if (!myLob.IsNull)
{
string FN = myReader.GetString(myReader.GetOrdinal("DOCUMENT_NAME"));
//Use buffer to transfer data
byte[] b = new byte[myLob.Length];
//Read data from database
myLob.Read(b, 0, (int)myLob.Length);
Response.AddHeader("content-disposition", "attachment;filename=" + FN);
Response.ContentType = "application/octectstream";
Response.BinaryWrite(b);
Response.End();
}
}
}
finally
{
myReader.Close();
conn.Close();
}
}
}
public void InsertCLOB(string SQLStatement, string str)
{
if (SQLStatement.Length > 0)
{
if (connOracle.State.ToString().Equals("Open"))
{
byte[] newvalue = System.Text.Encoding.Unicode.GetBytes(str);
sqlCommandOracle =
new System.Data.OracleClient.OracleCommand(SQLStatement, connOracle);
rstOracle = sqlCommandOracle.ExecuteReader();
rstOracle.Read();
txn = connOracle.BeginTransaction();
clob = rstOracle.GetOracleLob(0);
clob.Write(newvalue, 0, newvalue.Length);
txn.Commit();
}
}
}
protected void DataList2_SelectedIndexChanged(object sender, EventArgs e)
{
int idx = DataList2.SelectedIndex;
Label lbl = (Label)DataList2.Items[idx].FindControl("Label2");
System.Data.OracleClient.OracleConnection conn = new System.Data.OracleClient.OracleConnection(ConfigurationManager.ConnectionStrings["CGConnectionString"].ToString());
System.Data.OracleClient.OracleCommand myCommand = new System.Data.OracleClient.OracleCommand("SELECT * FROM wf_it_images WHERE ID = '" + lbl.Text + "'", conn);
conn.Open();
System.Data.OracleClient.OracleDataReader myReader = myCommand.ExecuteReader(System.Data.CommandBehavior.Default);
try
{
while (myReader.Read())
{
System.Data.OracleClient.OracleLob myLob = myReader.GetOracleLob(myReader.GetOrdinal("IMAGE"));
if (!myLob.IsNull)
{
string FN = myReader.GetString(myReader.GetOrdinal("IMAGE_NAME"));
//Use buffer to transfer data
byte[] b = new byte[myLob.Length];
//Read data from database
myLob.Read(b, 0, (int)myLob.Length);
Response.AddHeader("content-disposition", "attachment;filename=" + FN);
Response.ContentType = "application/octectstream";
Response.BinaryWrite(b);
Response.End();
}
}
}
finally
{
myReader.Close();
conn.Close();
}
}
// https://social.msdn.microsoft.com/Forums/en-US/dc1b053d-f0d5-48f8-ad82-fb6d96d27f80/how-to-insert-or-update-blob-data-for-sqlserver-based-on-buffersize?forum=adodotnetdataproviders
public void WriteLargeFileChunckedOracle(string path)
{
byte[] buffer = new byte[1024];
using (System.Data.OracleClient.OracleCommand cmd = null)
{
using (System.Data.OracleClient.OracleDataReader dataReader = cmd.ExecuteReader(System.Data.CommandBehavior.CloseConnection))
{
// this code segment works well for Oracle database
System.Data.OracleClient.OracleLob lob = dataReader.GetOracleLob(1);
using (System.IO.Stream fileStream = System.IO.File.OpenRead(path))
{
lob.SetLength(0);
int readBytes = 0;
while ((readBytes = fileStream.Read(buffer, 0, buffer.Length)) > 0)
{
lob.Write(buffer, 0, readBytes);
} // Whend
} // End Using fileStream
} // End Using dataReader
} // End Using cmd
} // End Sub WriteLargeFileChunckedOracle
