public DataTable LoadColumns(string cn, string tableName)
{
DataTable metaData = new DataTable();
metaData.Columns.Add("TABLE_NAME", Type.GetType("System.String"));
metaData.Columns.Add("COLUMN_NAME", Type.GetType("System.String"));
metaData.Columns.Add("ORDINAL_POSITION", Type.GetType("System.Int32"));
metaData.Columns.Add("IS_NULLABLE", Type.GetType("System.Boolean"));
metaData.Columns.Add("COLUMN_HASDEFAULT", Type.GetType("System.Boolean"));
metaData.Columns.Add("COLUMN_DEFAULT", Type.GetType("System.String"));
metaData.Columns.Add("IS_AUTO_KEY", Type.GetType("System.Boolean"));
metaData.Columns.Add("AUTO_KEY_SEED", Type.GetType("System.Int32"));
metaData.Columns.Add("AUTO_KEY_INCREMENT", Type.GetType("System.Int32"));
metaData.Columns.Add("DATA_TYPE_NAME", Type.GetType("System.String"));
metaData.Columns.Add("NUMERIC_PRECISION", Type.GetType("System.Int32"));
metaData.Columns.Add("NUMERIC_SCALE", Type.GetType("System.Int32"));
metaData.Columns.Add("CHARACTER_MAXIMUM_LENGTH", Type.GetType("System.Int32"));
metaData.Columns.Add("CHARACTER_OCTET_LENGTH", Type.GetType("System.Int32"));
metaData.Columns.Add("DESCRIPTION", Type.GetType("System.String"));
metaData.Columns.Add("IS_PRIMARY_KEY", Type.GetType("System.Boolean"));
try
{
Provider.VistaDB.VistaDBDatabase db = OpenDatabase(cn);
db.Connect();
Provider.VistaDB.VistaDBTable table = new Provider.VistaDB.VistaDBTable(db, tableName);
table.Open();
for (int ordinal = 0; ordinal < table.ColumnCount(); ordinal++)
{
Provider.VistaDB.VistaDBColumn c = table.Columns[ordinal];
bool b = false;
string colName = c.Name;
string def = table.GetDefaultValue(colName, out b);
int width = c.ColumnWidth;
int dec = c.ColumnDecimals;
int length = 0;
int octLength = width;
if (c.Identity)
{
// While I'll see their point this is not typically how it is done
def = "";
}
string type = c.VistaDBType.ToString();
switch (type)
{
case "Character":
case "Varchar":
length = width;
width = 0;
dec = 0;
break;
case "Currency":
case "Double":
break;
default:
width = 0;
dec = 0;
break;
}
metaData.Rows.Add(new object[]
{
table.TableName,
c.Name,
ordinal,
c.AllowNull,
def == string.Empty ? false : true,
def,
c.Identity,
1,
(int)c.IdentityStep,
c.VistaDBType.ToString(),
width,
dec,
length,
octLength,
c.ColumnDescription,
c.PrimaryKey
});
}
table.Close();
db.Close();
}
catch {}
return(metaData);
}
public DataTable LoadColumns(string cn, string tableName)
{
DataTable metaData = new DataTable();
metaData.Columns.Add("TABLE_NAME", Type.GetType("System.String"));
metaData.Columns.Add("COLUMN_NAME", Type.GetType("System.String"));
metaData.Columns.Add("ORDINAL_POSITION", Type.GetType("System.Int32"));
metaData.Columns.Add("IS_NULLABLE", Type.GetType("System.Boolean"));
metaData.Columns.Add("COLUMN_HASDEFAULT", Type.GetType("System.Boolean"));
metaData.Columns.Add("COLUMN_DEFAULT", Type.GetType("System.String"));
metaData.Columns.Add("IS_AUTO_KEY", Type.GetType("System.Boolean"));
metaData.Columns.Add("AUTO_KEY_SEED", Type.GetType("System.Int32"));
metaData.Columns.Add("AUTO_KEY_INCREMENT", Type.GetType("System.Int32"));
metaData.Columns.Add("DATA_TYPE_NAME", Type.GetType("System.String"));
metaData.Columns.Add("NUMERIC_PRECISION", Type.GetType("System.Int32"));
metaData.Columns.Add("NUMERIC_SCALE", Type.GetType("System.Int32"));
metaData.Columns.Add("CHARACTER_MAXIMUM_LENGTH", Type.GetType("System.Int32"));
metaData.Columns.Add("CHARACTER_OCTET_LENGTH", Type.GetType("System.Int32"));
metaData.Columns.Add("DESCRIPTION", Type.GetType("System.String"));
metaData.Columns.Add("IS_PRIMARY_KEY", Type.GetType("System.Boolean"));
try
{
Provider.VistaDB.VistaDBDatabase db = OpenDatabase(cn);
db.Connect();
Provider.VistaDB.VistaDBTable table = new Provider.VistaDB.VistaDBTable(db, tableName);
table.Open();
for(int ordinal = 0; ordinal < table.ColumnCount(); ordinal++)
{
Provider.VistaDB.VistaDBColumn c = table.Columns[ordinal];
bool b = false;
string colName = c.Name;
string def = table.GetDefaultValue(colName, out b);
int width = c.ColumnWidth;
int dec = c.ColumnDecimals;
int length = 0;
int octLength = width;
if(c.Identity)
{
// While I'll see their point this is not typically how it is done
def = "";
}
string type = c.VistaDBType.ToString();
switch(type)
{
case "Character":
case "Varchar":
length = width;
width = 0;
dec = 0;
break;
case "Currency":
case "Double":
break;
default:
width = 0;
dec = 0;
break;
}
metaData.Rows.Add(new object[]
{
table.TableName,
c.Name,
ordinal,
c.AllowNull,
def == string.Empty ? false : true,
def,
c.Identity,
1,
(int)c.IdentityStep,
c.VistaDBType.ToString(),
width,
dec,
length,
octLength,
c.ColumnDescription,
c.PrimaryKey
} );
}
table.Close();
db.Close();
}
catch {}
return metaData;
}
