public static void DbOpreation2(Func<BusinessResult> action)
{
var result = action();
if (result.ResultType < 0)
{
throw new DbException(result.ResultMessage);
}
}
public static void DbOpreation(Func<DataCriteria> action)
{
var result = action();
if (result != null && result.ResultType != 0)
{
throw new DbException(result.GetMessage());
}
}
public static ActionResult Execute(Func<ActionResult> call, Func<Exception, ActionResult> exceptionCall)
{
try
{
return call();
}
catch (Exception ex)
{
return exceptionCall(ex);
}
}
public static void DbTransaction(Func<BusinessResult> action)
{
var trans = BusinessPortal.BeginTransaction();
try
{
DbOpreation(action);
trans.Commit();
}
catch
{
trans.Rollback();
throw;
}
}
public static string DataRowToCSV(List<ExportInfo> exportInfos, DataRow dr, Func<string,object, object> setValue =null)
{
string result = string.Empty;
StringBuilder stringBuilder = new StringBuilder();
foreach (ExportInfo exportInfo in exportInfos)
{
DataColumn dc = dr.Table.Columns[exportInfo.FileName];
if (dc == null)
{
throw new NotSupportedException(string.Format("{0} 上未发现 DataColumn 定义", exportInfo.FileName));
}
object dcValue = dr[exportInfo.FileName];
if (setValue != null)
{
dcValue = setValue(exportInfo.FileName,dcValue);
}
switch (dc.DataType.Name)
{
case "String":
if (dcValue != null && dcValue != DBNull.Value)
{
stringBuilder.Append("=\"" + (string)dcValue + "\"\t");
}
else
{
stringBuilder.Append("\t");
}
break;
case "DateTime":
if (dcValue != null && dcValue != DBNull.Value)
{
stringBuilder.Append(((DateTime)dcValue).ToString(exportInfo.FormatString) + "\t");
}
else
{
stringBuilder.Append("\t");
}
break;
case "Boolean":
if (dcValue != null && dcValue != DBNull.Value)
{
stringBuilder.Append(((bool)dcValue) ? "YES\t" : "NO\t");
}
else
{
stringBuilder.Append("\t");
}
break;
#region 特殊处理
case "Int32":
if (dcValue != null && dcValue != DBNull.Value)
{
if (dcValue.ToString() == string.Empty)
{
stringBuilder.Append("0\t");
}
else
{
stringBuilder.Append(dcValue.ToString() + "\t");
}
}
else
{
stringBuilder.Append("0\t");
}
break;
case "Decimal":
if (dcValue != null && dcValue != DBNull.Value)
{
if (dcValue.ToString() == string.Empty)
{
stringBuilder.Append("0.00%\t");
}
else
{
stringBuilder.Append(dcValue.ToString() + "%\t");
}
}
else
{
stringBuilder.Append("0.00%\t");
}
break;
#endregion
default:
if (dcValue != null && dcValue != DBNull.Value)
{
stringBuilder.Append(dcValue.ToString() + "\t");
}
else
{
stringBuilder.Append("\t");
}
break;
}
}
result = stringBuilder.ToString();
if (!string.IsNullOrWhiteSpace(result))
{
result = result.Substring(0, result.Length - 1);
}
return result;
}
public static int DataTableExportToCSV(string fileName, List<ExportInfo> exportInfos, Type resourceType, DataTable dt, Func<string, object, object> setValue = null)
{
int result = 0;
using (var writer = new StreamWriter(fileName, false, Encoding.Unicode))
{
result = DataTableExportToCSV(writer, exportInfos, resourceType, dt,setValue);
writer.Close();
}
return result;
}
public static int DataTableExportToCSV(StreamWriter writer, List<ExportInfo> exportInfos, Type resourceType, DataTable dt, Func<string, object, object> setValue = null)
{
if (dt.Rows == null || dt.Rows.Count <= 0)
{
return -1;
}
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.AppendLine(TitleToCSV(exportInfos, resourceType));
foreach (DataRow dr in dt.Rows)
{
string drCSV = DataRowToCSV(exportInfos, dr, setValue);
if (!string.IsNullOrWhiteSpace(drCSV))
{
stringBuilder.AppendLine(drCSV);
}
}
writer.Write(stringBuilder.ToString());
return 0;
}