自动完成文本框,带有两个选项,可在c#winform中搜索
这是我的自动完成文本框,带有两个选项,可在c#winform中搜索,c#,winforms,autocomplete,textbox,C#,Winforms,Autocomplete,Textbox,这是我的FormLoad-事件上的代码 SqlDataReader dReader; SqlConnection conn = new SqlConnection(MyClass.GlobalConn()); conn.Open(); SqlCommand cmd = new SqlCommand(); cmd.Connection = conn; cmd.CommandType = CommandType.Text; if (radioName.checked==true) {
FormLoad
-事件上的代码
SqlDataReader dReader;
SqlConnection conn = new SqlConnection(MyClass.GlobalConn());
conn.Open();
SqlCommand cmd = new SqlCommand();
cmd.Connection = conn;
cmd.CommandType = CommandType.Text;
if (radioName.checked==true)
{
cmd.CommandText = "select RTRIM(Person_name) from MyTable order by Person_name";
}
else
{
cmd.CommandText = "select RTRIM(Person_number) from MyTable order by Person_number";
}
dReader = cmd.ExecuteReader();
if (dReader.HasRows == true)
{
while (dReader.Read())
namesCollection.Add(dReader[0].ToString());
}
else
{
MessageBox.Show("Data not found");
}
dReader.Close();
tPT.AutoCompleteMode = AutoCompleteMode.Suggest;
tPT.AutoCompleteSource = AutoCompleteSource.CustomSource;
tPT.AutoCompleteCustomSource = namesCollection;
conn.Close();
在文本框中键入时,我需要两个选项来填充自动完成文本框:
但是它不起作用。我已经在我的
TextChanged
-事件中尝试过这一点,但运气不好。有人能帮我吗?而不是使用可选的自动完成源将所有数据更新到一个源中。这不会有任何问题,因为用户不必选择选项,而是通过决定选项来输入
SqlDataReader dReader;
SqlConnection conn = new SqlConnection(MyClass.GlobalConn());
conn.Open();
SqlCommand cmd = new SqlCommand();
cmd.Connection = conn;
cmd.CommandType = CommandType.Text;
cmd.CommandText = "select RTRIM(Person_name) from MyTable order by Person_name";
dReader = cmd.ExecuteReader();
cmd.CommandText = "select RTRIM(Person_number) from MyTable order by Person_number";
dReader = cmd.ExecuteReader();
if (dReader.HasRows == true)
{
while (dReader.Read())
namesCollection.Add(dReader[0].ToString());
}
else
{
MessageBox.Show("Data not found");
}
dReader.Close();
tPT.AutoCompleteMode = AutoCompleteMode.Suggest;
tPT.AutoCompleteSource = AutoCompleteSource.CustomSource;
tPT.AutoCompleteCustomSource = namesCollection;
conn.Close();
或者如果您想使用旧的选项
namesCollection.RemoveAll();
SqlDataReader dReader;
SqlConnection conn = new SqlConnection(MyClass.GlobalConn());
conn.Open();
SqlCommand cmd = new SqlCommand();
cmd.Connection = conn;
cmd.CommandType = CommandType.Text;
namesCollection.RemoveAll();
if (radioName.checked==true)
{
cmd.CommandText = "select RTRIM(Person_name) from MyTable order by Person_name";
}
else
{
cmd.CommandText = "select RTRIM(Person_number) from MyTable order by Person_number";
}
dReader = cmd.ExecuteReader();
if (dReader.HasRows == true)
{
while (dReader.Read())
namesCollection.Add(dReader[0].ToString());
}
else
{
MessageBox.Show("Data not found");
}
dReader.Close();
tPT.AutoCompleteMode = AutoCompleteMode.Suggest;
tPT.AutoCompleteSource = AutoCompleteSource.CustomSource;
tPT.AutoCompleteCustomSource = namesCollection;
conn.Close();
通知
namesCollection.RemoveAll()