private static void ChangeColumnDataType(DataTable table, DataColumn column, Type newtype)
{
if (table.Columns.Contains(column.ColumnName) == false)
{
return;
}
try
{
var newcolumn = new DataColumn("temp", newtype);
table.Columns.Add(newcolumn);
foreach (DataRow row in table.Rows)
{
try
{
row["temp"] = StiConvert.ChangeType(row[column], newtype);
}
catch
{
}
}
var indexColumn = table.Columns.IndexOf(column);
table.Columns.Remove(column);
newcolumn.ColumnName = column.ColumnName;
table.Columns[newcolumn.ColumnName].SetOrdinal(indexColumn);
}
catch (Exception)
{
}
}
public void FillDataTable(DataTable table, string query)
{
if (string.IsNullOrEmpty(this.ConnectionString))
{
return;
}
var currentCulture = Thread.CurrentThread.CurrentCulture;
try
{
Thread.CurrentThread.CurrentCulture = new CultureInfo("en-US", false);
using (var client = GetDefaultWebClient())
{
var url = StiUrl.Combine(this.Address, query);
var metadata = client.DownloadString(url);
#region JSON
object odata = null;
try
{
odata = JsonConvert.DeserializeObject(metadata);
}
catch
{
}
if (odata != null && odata is JObject)
{
JArray values = null;
var jObject = odata as JObject;
if (jObject != null)
{
foreach (var child in jObject.Children())
{
var jProperty = child as JProperty;
if (jProperty != null && jProperty.Name == "value" && jProperty.Value is JArray)
{
values = jProperty.Value as JArray;
}
}
}
if (values != null)
{
foreach (JObject value in values.ChildrenTokens)
{
var row = table.NewRow();
foreach (JProperty columnObjValue in value.ChildrenTokens)
{
try
{
var columnName = columnObjValue.Name;
var columnValue = columnObjValue.Value;
var currentColumn = table.Columns[columnName];
if (currentColumn != null)
{
var currentValue = StiConvert.ChangeType(columnValue, currentColumn.DataType);
row[columnName] = currentValue ?? DBNull.Value;
}
}
catch
{
}
}
table.Rows.Add(row);
}
}
}
#endregion
#region XML
else
{
using (var reader = new StringReader(metadata))
using (var xmlReader = XmlReader.Create(reader))
{
var root = XElement.Load(xmlReader);
var title = root.Elements().FirstOrDefault(e => e.Name.LocalName == "title");
if (title != null)
{
table.TableName = title.Value;
}
foreach (var entry in root.Elements().Where(e => e.Name.LocalName == "entry"))
{
var elementContent = entry.Elements().FirstOrDefault(e => e.Name.LocalName == "content");
if (elementContent == null)
{
continue;
}
var elementProperties = elementContent.Elements().FirstOrDefault(e => e.Name.LocalName.EndsWith("properties"));
if (elementProperties == null)
{
continue;
}
var row = table.NewRow();
#region Name
try
{
var elementTitle = entry.Elements().FirstOrDefault(e => e.Name.LocalName == "title");
if (elementTitle != null && table.Columns["Name"] != null)
{
row["Name"] = elementTitle.Value;
}
}
catch
{
}
#endregion
#region Description
try
{
var elementSummary = entry.Elements().FirstOrDefault(e => e.Name.LocalName == "summary");
if (elementSummary != null && table.Columns["Description"] != null)
{
row["Description"] = elementSummary.Value;
}
}
catch
{
}
#endregion
foreach (var elementProperty in elementProperties.Elements())
{
try
{
var columnName = elementProperty.Name.LocalName.Replace("d:", "");
var columnValue = elementProperty.Value;
var currentColumn = table.Columns[columnName];
if (currentColumn != null)
{
var value = StiConvert.ChangeType(columnValue, currentColumn.DataType);
row[columnName] = value ?? DBNull.Value;
}
}
catch
{
}
}
table.Rows.Add(row);
}
}
}
#endregion
}
}
catch
{
}
finally
{
Thread.CurrentThread.CurrentCulture = currentCulture;
}
}
internal DbParameter CreateParameterWithTypeAndSize(string typeName, string parameterName, int type, int size, Type dbType)
{
return(CreateObject(typeName, parameterName, StiConvert.ChangeType(type, dbType), size) as DbParameter);
}
