[英]TextChanged event is not firing in web application
在下面的代碼中,我一直在asp.net Web應用程序上工作。就我而言,textchange事件沒有觸發。請幫我解決問題。 碼:
public delegate void LeavingFocusHandler(int CurrentIndex);
public event LeavingFocusHandler LeavingFocus;
public string strValue { get; set; }
public int ItemIndex { get; set; }
protected void Page_Load(object sender, EventArgs e)
{
this.txtField.TextChanged += new EventHandler(txtField_Leave);
}
void txtField_Leave(object sender, EventArgs e)
{
try
{
this.strValue = txtField.Text;
if (this.LeavingFocus != null)
{
this.LeavingFocus(this.ItemIndex);
}
}
catch (Exception ex)
{
throw ex;
}
}
設計代碼:
<asp:TextBox ID="txtField" runat="server"></asp:TextBox>
設置AutoPostBack="true"
進行回發。 您最好不要這樣做,因為這可能會導致不必要的回發。
<asp:TextBox ID="txtField" runat="server" AutoPostBack="true"></asp:TextBox>
移動事件綁定線
protected override void OnInit(EventArgs e)
{
base.OnInit(e);
this.txtField.TextChanged += new EventHandler(txtField_Leave);
}
到頁面oninit事件處理程序。
這樣嘗試
您需要將AutoPostBack屬性設置為True才能觸發TextChange事件
設計代碼:
<asp:TextBox ID="txtField" runat="server" AutoPostBack="true"></asp:TextBox>
背后的代碼
protected void TextBox1_TextChanged(object sender, EventArgs e)
{
try
{
this.strValue = txtField.Text;
if (this.LeavingFocus != null)
{
this.LeavingFocus(this.ItemIndex);
}
}
catch (Exception ex)
{
throw ex;
}
}
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