Question

在Winform中，我有一个TextBox。我将其设置为“ AutoComplete”，并且我想知道在我的代码（c＃）中写什么，以将其“ AutoCompleteSource”设置为DataSet表中某些列的值。谢谢！

Answer 1

假设您在traceback (most recent call last): File "/base/alloc/tmpfs/dynamic_runtimes/python27g/7679791231c143f9/python27/python27_lib/versions/1/google/appengine/runtime/wsgi.py", line 240, in Handle handler = _config_handle.add_wsgi_middleware(self._LoadHandler()) File "/base/alloc/tmpfs/dynamic_runtimes/python27g/7679791231c143f9/python27/python27_lib/versions/1/google/appengine/runtime/wsgi.py", line 299, in _LoadHandler handler, path, err = LoadObject(self._handler) File "/base/alloc/tmpfs/dynamic_runtimes/python27g/7679791231c143f9/python27/python27_lib/versions/1/google/appengine/runtime/wsgi.py", line 85, in LoadObject obj = __import__(path[0]) File "/base/data/home/apps/e~emailtest69/20190507t182648.418021119853034691/main.py", line 23, in <module> from google.auth import app_engine File "/base/data/home/apps/e~emailtest69/20190507t182648.418021119853034691/lib/google/auth/app_engine.py", line 29, in <module> from google.auth import crypt File "/base/data/home/apps/e~emailtest69/20190507t182648.418021119853034691/lib/google/auth/crypt/__init__.py", line 39, in <module> from google.auth.crypt import rsa File "/base/data/home/apps/e~emailtest69/20190507t182648.418021119853034691/lib/google/auth/crypt/rsa.py", line 27, in <module> from google.auth.crypt import _python_rsa File "/base/data/home/apps/e~emailtest69/20190507t182648.418021119853034691/lib/google/auth/crypt/_python_rsa.py", line 24, in <module> from pyasn1.codec.der import decoder ImportError: No module named pyasn1.codec.der变量中有一个数据表，然后以自动完成源的形式显示其列的列表，则可以使用如下代码：

table

但是，使用var columns = table.Columns.Cast<DataColumn>(); var source = new AutoCompleteStringCollection(); source.AddRange(columns.Select(x => x.ColumnName).ToArray()); textBox1.AutoCompleteCustomSource = source; textBox1.AutoCompleteSource = AutoCompleteSource.CustomSource; textBox1.AutoCompleteMode = AutoCompleteMode.SuggestAppend;更有意义。要查看ComboBox的示例，请查看this post。

Answer 2

使用此信息填充数据源：

Source = dt.AsEnumerable().Select<System.Data.DataRow, String>(x => x.Field<String>("Name")).ToArray();

这将建议您

textbox.AutoCompleteCustomSource = source;
textbox.AutoCompleteMode = AutoCompleteMode.Suggest;
textbox.AutoCompleteSource = AutoCompleteSource.CustomSource;

Answer 3

在代码中：

var rows = table.Rows.Cast<DataRow>();
var source = new AutoCompleteStringCollection();
source.AddRange(rows.Select(x => x.Field<String>("ColumnName")).ToArray());
textBox.AutoCompleteCustomSource = source;
textBox.AutoCompleteSource = AutoCompleteSource.CustomSource;
textBox.AutoCompleteMode = AutoCompleteMode.SuggestAppend;

只需替换table，textBox和"ColumnName"。

如何从数据集表创建textBox autoCompleteSource？

3 个答案: