我错过了这些错误:
System.ArgumentException: Keyword not supported: 'initial catalog'.
at System.Data.SqlServerCe.SqlCeConnectionStringBuilder.GetIndex(String keyword)
at System.Data.SqlServerCe.SqlCeConnectionStringBuilder.set_Item(String keyword, Object value)
at System.Data.Common.DbConnectionStringBuilder.set_ConnectionString(String value)
at System.Data.SqlServerCe.SqlCeConnectionStringBuilder..ctor(String connectionString)
at System.Data.SqlServerCe.SqlCeConnection.set_ConnectionString(String value)
at System.Data.SqlServerCe.SqlCeConnection..ctor(String connectionString)
at Task5.Data.SqlRepository`1.GetTable(String where) in D:\Task5\Task5.Data\Repositories\SqlRepository.cs:line 96
at Task5.Data.SqlRepository`1.Select() in D:\Task5\Task5.Data\Repositories\SqlRepository.cs:line 39
at Task5.Data.Services.EntityDataService.CategoryList() in D:\Task5\Task5.Data\Services\EntityDataService.cs:line 32
at Task5.Program.Step1() in D:\Task5\Task5\Program.cs:line 74
我的代码出现错误:
private List<TEntity> GetTable(string where = null)
{
var query = $"select * from {GetTableName()} {where}";
var dataTable = new DataTable();
using(var sqlConnection = new SqlCeConnection(connectionString))
{
SqlCeDataAdapter sqlDA = new SqlCeDataAdapter(query, sqlConnection);
sqlDA.Fill(dataTable);
}
var entityList = new List<TEntity>();
foreach (DataRow row in dataTable.Rows)
{
var entity = new TEntity();
foreach (DataColumn column in dataTable.Columns)
{
var value = row[column.ColumnName];
typeof(TEntity).GetProperty(column.ColumnName).SetValue(entity, value);
}
entityList.Add(entity);
}
return entityList;
}
答案 0 :(得分:1)
正如@Amy指出的那样,错误消息非常简单。这似乎与您的连接字符串有关,因为您可能试图将SQL Server连接字符串与SQL CE数据库一起使用。我认为格式应为:
Data Source=MyData.sdf;Persist Security Info=False;
有关SQL CE连接字符串的更多详细信息,请参见this link。
修改
如果实际上使用的是SQL数据库(Express或其他),则说明使用的库错误。您正在使用不支持SQL Express连接字符串的SqlCeConnection
。您应该使用SqlConnection
和SqlDataAdapter
。
注意:我完全没有进行测试就对其进行了编辑
private List<TEntity> GetTable(string where = null)
{
var query = $"select * from {GetTableName()} {where}";
var dataTable = new DataTable();
using(var sqlConnection = new SqlConnection(connectionString))
{
SqlDataAdapter sqlDA = new SqlDataAdapter(query, sqlConnection);
sqlDA.Fill(dataTable);
}
var entityList = new List<TEntity>();
foreach (DataRow row in dataTable.Rows)
{
var entity = new TEntity();
foreach (DataColumn column in dataTable.Columns)
{
var value = row[column.ColumnName];
typeof(TEntity).GetProperty(column.ColumnName).SetValue(entity, value);
}
entityList.Add(entity);
}
return entityList;
}