SQL Server CE:没有足够的存储空间来完成该操作[CODE:8007000E]
如果你编写的 SQL Server CE 应用程序出现下面的错误信息:
Error Code: 8007000E
Message: Not enough storage is available to complete this operation.
Minor Err.:0 Source: Microsoft SQL Server 2000 Windows CE Edition
或者
Error Code: 8007000E
Message: 没有足够的存储空间来完成该操作。
Minor Err.:0 Source: Microsoft SQL Server 2000 Windows CE Edition
可能是以下原因导致的:
你在使用 SqlCeDataAdapter 对象填充 DataSet 后,没有显式地调用相关 SqlCeCommand 对象的 Dispose 方法。
解决方法:
在使用完 SqlCeDataAdapter 对象后,显式地调用与 SqlCeDataAdapter 对象相关的 SqlCeCommand 对象的 Dispose 方法。包括有 SelectCommand、InsertCommand、UpdateCommand 和 DeleteCommand。
示例代码:
public static DataSet LoadData()
{
string sqlstring = "";
// Make the connection to the SQL Server CE data source
SqlCeConnection conn = new SqlCeConnection("Data Source=<completePath of SDF file>");
// Create the SqlCeDataAdapter object
sqlCeDataAdapter da = new SqlCeDataAdapter();
// Create the DataSet object
DataSet ds = new DataSet();
try
{
sqlstring = "select name from mytable where name = ?";
// Create the SelectCommand instance to run a select query
da.SelectCommand = new SqlCeCommand();
// Set SelectCommand object properties
da.SelectCommand.Connection = conn;
da.SelectCommand.CommandText = sqlstring;
da.SelectCommand.Parameters.Add(new SqlCeParameter("name", System.Data.SqlDbType.NVarChar, 30));
da.SelectCommand.Parameters["name"].Value = name;
// Populate the DataSet object
da.Fill(ds,"name");
}
catch (SqlCeException sqlx)
{
ShowErrors(sqlx);
}
catch (Exception x)
{
MessageBox.Show(x.Message.ToString());
}
finally
{
// Explicitly dispose the SelectCommand instance
da.SelectCommand.Dispose();
da.Dispose();
}
return ds;
}
{
string sqlstring = "";
// Make the connection to the SQL Server CE data source
SqlCeConnection conn = new SqlCeConnection("Data Source=<completePath of SDF file>");
// Create the SqlCeDataAdapter object
sqlCeDataAdapter da = new SqlCeDataAdapter();
// Create the DataSet object
DataSet ds = new DataSet();
try
{
sqlstring = "select name from mytable where name = ?";
// Create the SelectCommand instance to run a select query
da.SelectCommand = new SqlCeCommand();
// Set SelectCommand object properties
da.SelectCommand.Connection = conn;
da.SelectCommand.CommandText = sqlstring;
da.SelectCommand.Parameters.Add(new SqlCeParameter("name", System.Data.SqlDbType.NVarChar, 30));
da.SelectCommand.Parameters["name"].Value = name;
// Populate the DataSet object
da.Fill(ds,"name");
}
catch (SqlCeException sqlx)
{
ShowErrors(sqlx);
}
catch (Exception x)
{
MessageBox.Show(x.Message.ToString());
}
finally
{
// Explicitly dispose the SelectCommand instance
da.SelectCommand.Dispose();
da.Dispose();
}
return ds;
}
参考微软知识库:
SqlCeCommand objects are not automatically disposed if you use a SqlCeDataAdapter object