[英]variable and textbox mapping in c# without using textbox changed event
我正在嘗試一個代碼,當與之映射的變量相應更改時,它更改了TextBox
值,而沒有使用TextBox
更改事件。 我找不到從哪里開始的任何線索,請幫助我。
這是代碼:
public void varChange(TextBox text)
{
String name;
name="sachin";
text.Text = name;
MessageBox.Show("" + text.Text);
}
您可以“擴展” 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);
}
}
如果這不是您想要的,請提供更多詳細信息,我將更新此答案。
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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