c# - 如何将类型 'byte[]' 转换为 'System.Data.Linq.Binary'

Question

我的数据库中有一个 WorkflowInstances 表，其中包含以下字段：ID (int)、Name (nvarchar(50)、WorkflowID (int)、Document (varbinary(MAX) ))。我想插入一个新的 WorkflowInstance 所以我写了这段代码

Stream myStream = openFileDialogDoc.OpenFile();
            if (myStream != null)
            {
                using (myStream)
                {
                    WorkflowInstance w = new WorkflowInstance();

                    byte[] bytes = new byte[myStream.Length];
                    myStream.Read(bytes, 0, (int)myStream.Length);
                    w.ID = repository.WorkflowsRepository.GetMaxIDWokflowInstance() + 1;
                    w.Name = textBoxWorkflowInstanceName.Text;
                    w.CurrentStateID = repository.WorkflowsRepository.GetWorkflowFirstState((int)listBoxMyWorkflows.SelectedValue);
                    w.WorkflowID = (int)listBoxMyWorkflows.SelectedValue;
                    w.CreationDate = System.DateTime.Now.ToString();
                    w.Document = bytes;
                    RapidWorkflowDataContext context = new RapidWorkflowDataContext();
                    context.WorkflowInstances.InsertOnSubmit(w);
                    context.SubmitChanges();
                }
            }

我在第 15 行遇到错误，错误是：无法将类型 'byte[]' 隐式转换为 'System.Data.Linq.Binary'

Answer 1

System.Data.Linq.Binary有一个构造函数采用 1 个参数byte[]：

w.Document = new System.Data.Linq.Binary(bytes);