private void UpdateStatus(TableQueryResponseModel response)
{
if (response == null)
{
pageNextGrid.Visibility = Visibility.Collapsed;
return;
}
int totalPages = response.TotalPage;
if (totalPages > 0)
{
lblTotalPages.Content = string.Format("总页数:{0}", totalPages);
lblCurrentPage.Content = string.Format("当前页:{0}", response.PageNumber);
lblTotalCount.Content = string.Format("总记录数:{0}", response.TotalCount);
txtPageNumber.Text = response.PageNumber.ToString();
btnPreview.IsEnabled = response.PageNumber > 1 ? true : false;
btnNext.IsEnabled = response.PageNumber < totalPages ? true : false;
btnGoPage.IsEnabled = totalPages > 1 ? true : false;
pageNextGrid.Visibility = Visibility.Visible;
}
else
{
pageNextGrid.Visibility = Visibility.Collapsed;
}
}
private void PageQuery(int pageNumber)
{
if (cmbCity.SelectedIndex == -1)
{
ShowWarning("请选择城市!");
cmbCity.Focus();
return;
}
cityIds[cmbTable.SelectedIndex] = cmbCity.SelectedValue;
TableQueryResponseModel response = new TableQueryResponseModel();
CurrentData.Instance.QueryResult[cmbTable.SelectedIndex] = response;
SetEnabled(false);
try
{
var inputObj = GetTableQueryCriteria(cmbTable.SelectedIndex, pageNumber, (int)cmbCity.SelectedValue, dpBeginDate.SelectedDate.Value, dpEndDate.SelectedDate.Value);
DbHelper.PageQueryTable(inputObj, response);
response.Status = 1;
dgResult.DataContext = response.Result;
UpdateStatus(response);
}
catch (Exception ex)
{
response.Status = -1;
response.Message = ex.Message;
CurrentData.Instance.Logger.Error(ex);
ShowError(ex.Message);
}
SetEnabled(true);
}
public static TableQueryResponseModel PageQueryTable(TableQueryCriteria queryCriteria, TableQueryResponseModel queryResult)
{
if (queryCriteria.PageNumber < 1)
{
queryCriteria.PageNumber = 1;
}
queryResult.PageNumber = queryCriteria.PageNumber;
queryResult.PageSize = ConfigHelper.PageSize;
var countSql = CountSqlBuilder(queryCriteria);
var pageSql = PageSqlBuilder(queryCriteria);
#region query code
#region db server
string serverName = queryCriteria.DBServer;
string dbName = queryCriteria.DBName;
var dbConnList = ConfigHelper.GetConnectionStrings();
if (dbConnList == null || !dbConnList.ContainsKey(serverName))
{
throw new Exception("connectionStrings不存在的数据库服务器名称:" + serverName);
}
ConnectionStringSettings connSettings = dbConnList[serverName];
SqlConnectionStringBuilder cnBuilder = new SqlConnectionStringBuilder(connSettings.ConnectionString);
if (cnBuilder.InitialCatalog != dbName)
{
cnBuilder.InitialCatalog = dbName;
}
#endregion
DbProviderFactory factory = null;
DbConnection conn = null;
DbCommand command = null;
try
{
factory = DbProviderFactories.GetFactory(connSettings.ProviderName);
conn = factory.CreateConnection();
conn.ConnectionString = cnBuilder.ConnectionString;
conn.Open();
command = conn.CreateCommand();
command.CommandType = CommandType.Text;
#region read table
//读取总记录数
command.CommandText = countSql;
queryResult.TotalCount = (int)command.ExecuteScalar();
//分页读取
command.CommandText = pageSql;
using (DbDataAdapter reader = factory.CreateDataAdapter())
{
reader.SelectCommand = command;
DataSet ds = new DataSet();
reader.Fill(ds);
reader.Dispose();
queryResult.Result = ds.Tables[0];
}
//移除rowNumber列
queryResult.Result.Columns.Remove("rowNumber");
#endregion
}
finally
{
#region dispose
if (command != null)
{
command.Dispose();
command = null;
}
if (conn != null)
{
conn.Close();
conn = null;
}
#endregion
}
#endregion
return(queryResult);
}