public static T GetValue <T>(this DataRow dataRow, string name, T outputNullValue)
{
ArgumentNullException.ThrowIfNull(dataRow, nameof(dataRow));
var valueObject = dataRow[name];
return(ValueReader.GetValue(valueObject, outputNullValue));
}
/// <summary>
/// Helper method used to build a <see cref="TrackingWorkflowInstance" />
/// from the specified <see cref="IDataRecord" />.
/// </summary>
/// <param name="dataRecord">
/// An <see cref="IDataRecord" />.
/// </param>
/// <returns>
/// An instance of <see cref="TrackingWorkflowInstance" />.
/// </returns>
private TrackingWorkflowInstance buildTrackingWorkflowInstance(IDataRecord dataRecord, TrackingCommandName commandName)
{
String assemblyName = ValueReader.GetString(dataRecord,
_nameResolver.ResolveParameterName(commandName,
TrackingParameterName.AssemblyFullName));
String typeName = ValueReader.GetString(dataRecord,
_nameResolver.ResolveParameterName(commandName,
TrackingParameterName.TypeFullName));
return(new TrackingWorkflowInstance(
WorkflowInstanceHelper.DeserialiseActivity(ValueReader.GetString(
dataRecord, _nameResolver.ResolveParameterName(commandName,
TrackingParameterName.ActivityXoml))),
ValueReader.GetGuid(dataRecord, _nameResolver.ResolveParameterName(
commandName, TrackingParameterName.InstanceId)),
ValueReader.GetDateTime(dataRecord, _nameResolver.ResolveParameterName(
commandName, TrackingParameterName.InitialisedDateTime)),
ValueReader.GetValue(dataRecord, _nameResolver.ResolveParameterName(
commandName, TrackingParameterName.WorkflowInstanceId)),
ValueReader.GetGuid(dataRecord, _nameResolver.ResolveParameterName(
commandName, TrackingParameterName.CallerInstanceId)),
ValueReader.GetEnum <WorkflowStatus>(dataRecord,
_nameResolver.ResolveParameterName(commandName,
TrackingParameterName.WorkflowInstanceStatusId)),
Type.GetType(String.Format("{0}, {1}", assemblyName, typeName), false)));
}
public static T GetValue <T>(this DataRow dataRow, string name, T outputNullValue)
{
Assert.IsNotNull(dataRow, nameof(dataRow));
var valueObject = dataRow[name];
return(ValueReader.GetValue(valueObject, outputNullValue));
}
private void Schema_Click(object sender, EventArgs e)
{
using (new CursorManager(Cursors.WaitCursor))
{
var commandText = string.Format(
@"use [{0}]
exec sp_MShelpcolumns N'{1}.[{2}]', @orderby = 'id'
exec sp_MStablekeys N'{1}.[{2}]', null, 14
exec sp_MStablechecks N'{1}.[{2}]'", DatabaseNode.Name, _owner, _name);
Log.Write(LogLevel.Trace, commandText);
var connectionString = DatabaseNode.Databases.Server.ConnectionString;
DataSet dataSet;
using (var connection = new SqlConnection(connectionString))
{
var executor = connection.CreateCommandExecutor();
dataSet = executor.ExecuteDataSet(new ExecuteReaderRequest(commandText));
}
var columns = dataSet.Tables[0];
var keys = dataSet.Tables[1];
var schema = new DataTable();
schema.Columns.Add(" ", typeof(int));
schema.Columns.Add(" ", typeof(string));
schema.Columns.Add("Name", typeof(string));
schema.Columns.Add("Type", typeof(string));
schema.Columns.Add("Collation", typeof(string));
schema.Columns.Add("Formula", typeof(string));
foreach (DataRow column in columns.Rows)
{
string identity;
if (Convert.ToBoolean(column["col_identity"]))
{
identity = "IDENTITY";
}
else
{
identity = string.Empty;
}
var sb = new StringBuilder();
var dbType = column["col_typename"].ToString();
sb.Append(dbType);
switch (dbType)
{
case "decimal":
case "numeric":
var precision = Convert.ToInt32(column["col_prec"]);
var scale = Convert.ToInt32(column["col_scale"]);
if (scale == 0)
{
sb.AppendFormat("({0})", precision);
}
else
{
sb.AppendFormat("({0},{1})", precision, scale);
}
break;
case "char":
case "nchar":
case "varchar":
case "nvarchar":
case "varbinary":
var columnLength = (int)column["col_len"];
string columnlengthString;
if (columnLength == -1)
{
columnlengthString = "max";
}
else
{
columnlengthString = columnLength.ToString();
}
sb.AppendFormat("({0})", columnlengthString);
break;
}
if (!Convert.ToBoolean(column["col_null"]))
{
sb.Append(" not null");
}
var collation = ValueReader.GetValue(column["collation"], string.Empty);
var formula = string.Empty;
if (column["text"] != DBNull.Value)
{
formula = column["text"].ToString();
}
schema.Rows.Add(column["col_id"], identity, column["col_name"], sb.ToString(), collation, formula);
}
if (keys.Rows.Count > 0)
{
var pk = (from row in keys.AsEnumerable()
where row.Field <byte>("cType") == 1
select row).FirstOrDefault();
if (pk != null)
{
for (var i = 1; i <= 16; i++)
{
var keyColObj = pk["cKeyCol" + i];
if (keyColObj == DBNull.Value)
{
break;
}
var keyCol = keyColObj.ToString();
var filter = $"Name = '{keyCol}'";
var dataRow = schema.Select(filter)[0];
var identity = dataRow[1].ToString();
if (identity.Length > 0)
{
dataRow[1] = "PKEY," + dataRow[1];
}
else
{
dataRow[1] = "PKEY";
}
}
}
}
dataSet.Tables.Add(schema);
var mainForm = DataCommanderApplication.Instance.MainForm;
var queryForm = (QueryForm)mainForm.ActiveMdiChild;
queryForm.ShowDataSet(dataSet);
}
}