// 发起一次书目检索
// 发起检索成功后，调主应该用 SearchResponseEvent 事件接收检索结果
// return:
// -1 出错
// 0 没有检索目标
// 1 成功发起检索
public int BeginSearchBiblio(
string userNameList,
#if NO
string operation,
string inputSearchID,
string dbNameList,
string queryWord,
string fromList,
string matchStyle,
string formatList,
long maxResults,
#endif
SearchRequest searchParam,
out string outputSearchID,
out string strError)
{
strError = "";
outputSearchID = "";
AddInfoLine("BeginSearchBiblio "
+ "; userNameList=" + userNameList
#if NO
+ "; operation=" + operation
+ "; searchID=" + inputSearchID
+ "; dbNameList=" + dbNameList
+ "; queryWord=" + queryWord
+ "; fromList=" + fromList
+ "; matchStyle=" + matchStyle
+ "; formatList=" + formatList
+ "; maxResults=" + maxResults
#endif
);
try
{
Task <MessageResult> task = HubProxy.Invoke <MessageResult>("RequestSearchBiblio",
userNameList,
#if NO
inputSearchID,
dbNameList,
queryWord,
fromList,
matchStyle,
formatList,
maxResults
#endif
searchParam
);
#if NO
while (task.IsCompleted == false)
{
Application.DoEvents();
Thread.Sleep(200);
}
#endif
WaitTaskComplete(task);
if (task.IsFaulted == true)
{
// AddErrorLine(GetExceptionText(task.Exception));
strError = GetExceptionText(task.Exception);
AddInfoLine("BeginSearchBiblio inputSearchID=" + searchParam.SearchID
+ "; return error=" + strError + " value="
+ -1);
return(-1);
}
MessageResult result = task.Result;
if (result.Value == -1)
{
// AddErrorLine(result.ErrorInfo);
strError = result.ErrorInfo;
AddInfoLine("BeginSearchBiblio inputSearchID=" + searchParam.SearchID
+ "; return error=" + strError + " value="
+ -1);
return(-1);
}
if (result.Value == 0)
{
// AddErrorLine(result.ErrorInfo);
strError = result.ErrorInfo;
AddInfoLine("BeginSearchBiblio inputSearchID=" + searchParam.SearchID
+ "; return error=" + strError + " value="
+ 0);
return(0);
}
// AddMessageLine("search ID:", result.String);
outputSearchID = result.String;
AddInfoLine("BeginSearchBiblio inputSearchID=" + searchParam.SearchID
+ "; return value="
+ 1);
return(1);
}
catch (Exception ex)
{
strError = ex.Message; // ExceptionUtil.GetAutoText(ex);
AddInfoLine("BeginSearchBiblio inputSearchID=" + searchParam.SearchID
+ "; return error=" + strError + " value="
+ -1);
return(-1);
}
}
// 发起一次书目检索
// 发起检索成功后，调主应该用 SearchResponseEvent 事件接收检索结果
// return:
// -1 出错
// 0 没有检索目标
// 1 成功发起检索
public int BeginSearchBiblio(
string inputSearchID,
string dbNameList,
string queryWord,
string fromList,
string matchStyle,
string formatList,
long maxResults,
out string outputSearchID,
out string strError)
{
strError = "";
outputSearchID = "";
try
{
Task <MessageResult> task = HubProxy.Invoke <MessageResult>("RequestSearchBiblio",
inputSearchID,
dbNameList,
queryWord,
fromList,
matchStyle,
formatList,
maxResults);
while (task.IsCompleted == false)
{
Application.DoEvents();
Thread.Sleep(200);
}
if (task.IsFaulted == true)
{
// AddErrorLine(GetExceptionText(task.Exception));
strError = GetExceptionText(task.Exception);
return(-1);
}
MessageResult result = task.Result;
if (result.Value == -1)
{
// AddErrorLine(result.ErrorInfo);
strError = result.ErrorInfo;
return(-1);
}
if (result.Value == 0)
{
// AddErrorLine(result.ErrorInfo);
strError = result.ErrorInfo;
return(0);
}
// AddMessageLine("search ID:", result.String);
outputSearchID = result.String;
return(1);
}
catch (Exception ex)
{
strError = ex.Message;
return(-1);
}
}
async Task DeleteUser()
{
string strError = "";
if (this.listView1.SelectedItems.Count == 0)
{
strError = "尚未选定要删除的事项";
goto ERROR1;
}
{
DialogResult result = MessageBox.Show(this,
"确实要删除选定的 " + this.listView1.SelectedItems.Count.ToString() + " 个用户?",
"UserManageDialog",
MessageBoxButtons.YesNo,
MessageBoxIcon.Question,
MessageBoxDefaultButton.Button2);
if (result != DialogResult.Yes)
{
return;
}
}
List <User> users = new List <User>();
foreach (ListViewItem item in this.listView1.SelectedItems)
{
User user = (User)item.Tag;
users.Add(user);
}
this.EnableControls(false);
try
{
MessageResult result = await this.Connection.SetUsers("delete", users);
if (result.Value == -1)
{
strError = result.ErrorInfo;
goto ERROR1;
}
}
catch (AggregateException ex)
{
strError = MessageConnection.GetExceptionText(ex);
goto ERROR1;
}
catch (Exception ex)
{
strError = ex.Message;
goto ERROR1;
}
finally
{
this.EnableControls(true);
}
foreach (ListViewItem item in this.listView1.SelectedItems)
{
this.listView1.Items.Remove(item);
}
this.Changed = true;
return;
ERROR1:
this.Invoke((Action)(() =>
{
MessageBox.Show(this, strError);
}
));
}
// 进行检索并得到结果
// 这是将发出和接受消息结合起来的功能比较完整的 API
public Task <SearchResult> SearchAsync(
string strRemoteUserName,
SearchRequest request,
TimeSpan timeout,
CancellationToken token)
{
return(Task.Factory.StartNew <SearchResult>(() =>
{
SearchResult result = new SearchResult();
if (string.IsNullOrEmpty(request.TaskID) == true)
{
request.TaskID = Guid.NewGuid().ToString();
}
MessageResult message = HubProxy.Invoke <MessageResult>(
"RequestSearch",
strRemoteUserName,
request).Result;
if (message.Value == -1 || message.Value == 0)
{
result.ErrorInfo = message.ErrorInfo;
result.ResultCount = -1;
return result;
}
DateTime start_time = DateTime.Now;
// 循环，取出得到的检索结果
for (; ;)
{
if (token != null)
{
token.ThrowIfCancellationRequested();
}
if (DateTime.Now - start_time >= timeout)
{
throw new TimeoutException("已超时 " + timeout.ToString());
}
SearchResult result0 = (SearchResult)_resultTable[request.TaskID];
if (result0 != null && result0.ResultCount == -1)
{
ClearResultFromTable(request.TaskID);
return result0;
}
if (result0 != null && result0.Records != null && result0.Records.Count >= result0.ResultCount)
{
ClearResultFromTable(request.TaskID);
return result0;
}
if (result0 != null && result0.Finished == true)
{
ClearResultFromTable(request.TaskID);
return result0;
}
Thread.Sleep(200);
}
}, token));
}
async Task ModifyUser()
{
string strError = "";
if (this.listView1.SelectedItems.Count == 0)
{
strError = "尚未选定要修改的事项";
goto ERROR1;
}
ListViewItem item = this.listView1.SelectedItems[0];
UserDialog dlg = new UserDialog();
dlg.Font = this.Font;
dlg.ChangeMode = true;
dlg.UserItem = (User)item.Tag;
dlg.ShowDialog(this);
if (dlg.DialogResult == System.Windows.Forms.DialogResult.Cancel)
{
return;
}
if (dlg.Changed == false && dlg.ChangePassword == false)
{
MessageBox.Show(this, "没有发生修改");
return;
}
List <User> users = new List <User>();
User user = dlg.UserItem;
users.Add(user);
this.EnableControls(false);
try
{
if (dlg.Changed == true)
{
MessageResult result = await this.Connection.SetUsers("change", users);
if (result.Value == -1)
{
strError = result.ErrorInfo;
// 如果这里返回出错仅仅是因为权限不够，还需要尝试继续执行后面的修改密码的操作
if (result.String != "Denied")
{
goto ERROR1;
}
}
}
if (dlg.ChangePassword)
{
MessageResult result = await this.Connection.SetUsers("changePassword", users);
if (result.Value == -1)
{
if (string.IsNullOrEmpty(strError) == false)
{
strError += "; ";
}
strError += result.ErrorInfo;
goto ERROR1;
}
}
if (string.IsNullOrEmpty(strError) == false)
{
goto ERROR1;
}
}
catch (AggregateException ex)
{
strError = MessageConnection.GetExceptionText(ex);
goto ERROR1;
}
catch (Exception ex)
{
strError = ex.Message;
goto ERROR1;
}
finally
{
this.EnableControls(true);
}
ChangeItem(item, dlg.UserItem);
this.Changed = true;
return;
ERROR1:
this.Invoke((Action)(() =>
{
MessageBox.Show(this, strError);
}
));
}