[英]variable and textbox mapping in c# without using textbox changed event
I'm trying a code which changes the TextBox
values when variable mapped with it changes accordingly without using TextBox
changed event. 我正在尝试一个代码,当与之映射的变量相应更改时,它更改了
TextBox
值,而没有使用TextBox
更改事件。 I am not finding any clue to where to start please help me. 我找不到从哪里开始的任何线索,请帮助我。
Here is the code: 这是代码:
public void varChange(TextBox text)
{
String name;
name="sachin";
text.Text = name;
MessageBox.Show("" + text.Text);
}
You can "extend" TextBox
: 您可以“扩展”
TextBox
:
public class MeTextBox : TextBox
{
public override string Text
{
get
{
return base.Text;
}
set
{
//base.Text = value; // use it or not .. whatever
MyTextWasChanged();
}
}
void MyTextWasChanged()
{
String name;
name="sachin";
//text.Text = name;
base.Text = name;
MessageBox.Show("" + text.Text);
}
}
If that's not what you're looking for then give some more details and I'll update this answer. 如果这不是您想要的,请提供更多详细信息,我将更新此答案。
You can use a BindingSource 您可以使用BindingSource
public partial class Form1 : Form
{
private System.Windows.Forms.BindingSource form1BindingSource;
public string BindedProp { get; set; } //Variable or property binded with TextBox
public Form1()
{
InitializeComponent();
this.form1BindingSource = new System.Windows.Forms.BindingSource(new System.ComponentModel.Container());
this.form1BindingSource.DataSource = typeof(binding.Form1);
this.textBox.DataBindings.Add(new System.Windows.Forms.Binding("Text", this.form1BindingSource, "BindedProp", true));
this.form1BindingSource.DataSource = this;
}
//add a button control to assing value code event click
private void btAssingValueProperty_Click(object sender, EventArgs e)
{
BindedProp = "Value assigned";
form1BindingSource.ResetBindings(false);
}
//add a other button control to show value code event click
private void btShowValueProperty_Click(object sender, EventArgs e)
{
MessageBox.Show(BindedProp);
}
}
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