我这里有一个无法解决的问题。我的Windows应用程序中有一个文本框。在该文本框中,我想显示一个建议。在我的数据库中,我具有列名“ Codeitem”,它是整数。我想在我的texbox上显示此值,但我不知道该怎么做。任何帮助的人。非常感谢
AutoCompleteStringCollection Collection = new AutoCompleteStringCollection
private void SIMSProduct_Load(object sender, EventArgs e)
{
AddingProduct();
using (var con = SQLConnection.GetConnection())
{
var select = new SqlCommand("Select Codeitem from employee_product", con);
var reader = select.ExecuteReader();
while (reader.Read())
{
Collection.Add(reader.GetString(0));
}
}
}
private void txt_code_TextChanged(object sender, EventArgs e)
{
txt_code.AutoCompleteCustomSource = Collection;
txt_code.AutoCompleteMode = AutoCompleteMode.Append;
txt_code.AutoCompleteSource = AutoCompleteSource.CustomSource;
}
答案 0 :(得分:1)
添加以下两行: txt_code.AutoCompleteMode = AutoCompleteMode.Append; txt_code.AutoCompleteSource = AutoCompleteSource.CustomSource;
您添加的位置: txt_code.AutoCompleteCustomSource =集合;
作为旁注,请确保对阅读器使用(),然后选择。使用完后应将SqlCommands和SqlDataReaders丢弃。
答案 1 :(得分:0)
您需要在此处阅读文档:https://docs.microsoft.com/en-us/dotnet/api/system.windows.forms.textbox.autocompletemode?redirectedfrom=MSDN&view=netframework-4.7.2#System_Windows_Forms_TextBox_AutoCompleteMode,并且在这里已经回答了问题的答案:C#: How to use custom autocomplete source for textbox,您忘记添加:
AutoCompleteMode = AutoCompleteMode.SuggestAppend;
AutoCompleteSource = AutoCompleteSource.CustomSource;