以编程方式设置数据绑定文本框的文本 [英] Setting text programmatically of a databound textbox

问题描述

我有一个绑定到BindingSource对象并使用客户对象作为数据源的TextBox。
当我以编程方式更改TextBox的文本时，我发现了一个奇怪的行为，它没有更新更改文本后绑定的对象。

I've a TextBox which is bound to a BindingSource object and use a customer object as the datasource.
I found a strange behavior when I change the text of the TextBox programmatically, it does not update the object bound behind after text is changed.

客户客户=新客户;
customer.CustomerNo =" 123" ;;
bindingSource1.DataSource = customer;
textBox1 .DataBindings.Add（" Text"，bindingSource1，" CustomerNo"）;
MessageBox.Show（customer.CustomerNo）; // display" 123"
textBox1.Text =" ABC" ;;
MessageBox.Show（customer.CustomerNo）; // display" 123"

Customer customer = new Customer;
customer.CustomerNo = "123";
bindingSource1.DataSource = customer;
textBox1.DataBindings.Add("Text", bindingSource1, "CustomerNo");
MessageBox.Show(customer.CustomerNo); // display "123"
textBox1.Text = "ABC";
MessageBox.Show(customer.CustomerNo); // display "123" too

然而，如果我关注TextBox并离开它，它将更新新值"ABC"。对象。
我想知道如果我不应该以编程方式更改任何数据绑定控件的文本？

However, if I focus the TextBox and leave it, it will update new value "ABC" to the object.
I want to know that if I should not change the text of any databound control programmatically?

推荐答案

有你试过bindingSource1.EndEdit（）？

Have you tried bindingSource1.EndEdit() ?

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