如何在按钮上弹出警报单击Asp.net 2.0中的代码？

Question

我试过这段代码但是没有用..

protected void btnAbc_Click(object sender, EventArgs e)
{
    string script = "<script language='javascript'>alert('abc');</script>";"
    ClientScript.RegisterClientScriptBlock(this.GetType(), "Alert", script,true);
}

请咨询。

Answer 1

你有双脚本标签。自己添加脚本标记：

protected void btnAbct_Click(object sender, EventArgs e) {
   string script = "<script type=\"text/javascript\">alert('abc');</script>";
   ClientScript.RegisterClientScriptBlock(this.GetType(), "Alert", script);
}

或者让方法添加它：

protected void btnAbct_Click(object sender, EventArgs e) {
   string script = "alert('abc');";
   ClientScript.RegisterClientScriptBlock(this.GetType(), "Alert", script, true);
}

不是两个。

还要考虑RegisterStartupScript方法是否更适合您想要做的事情。

Answer 2

ScriptManager.RegisterStartupScript(this, this.GetType(), "alerts", "javascript:alert('hai')", true); 

或

string script = "alert(\"Hello!\");";
ScriptManager.RegisterStartupScript(this, this.GetType(), "ServerControlScript", script, true);

Answer 3

按样品。添加一个SHARED CLASS，插入这段代码，在aspx中始终使用。

在课堂上共享（或没有）

    Public Shared Sub MostrarAlertaconControl(Control As Control, ByVal pagina As System.Web.UI.Page, ByVal mensaje As String)
    System.Web.UI.ScriptManager.RegisterClientScriptBlock(Control, pagina.GetType(), "alerta", "alert('" & mensaje.Replace("'", """") & "')", True)
End Sub

如何在 .aspx 中调用：

    Protected Sub Button1_Click1(sender As Object, e As EventArgs) Handles BotonExportar.Click
    If GridView1.Rows.Count > 0 Then
        Response.Redirect("VistaDatos.aspx")
    Else

        clsUtiles.MostrarAlertaconControl(BotonExportar, Page, "No hay datos para exportar")

    End If

End Sub