Question

我想检查方法

中是否点击了按钮

我试过但它没有用

代码：

protected override void LoadViewState(object savedState)
{
    base.LoadViewState(savedState);

    //Here If (btnAddExperience_Click()  is clicked)   
    {
    GenerateControls();
    } 

    GenerateControls1();
}


private void GenerateControls()
{
    foreach (string i in NoOfControls)
    {
        VisaUserControl ctrl = (VisaUserControl)Page.LoadControl("VisaUserControl.ascx");

        ctrl.ID = i;
        this.rpt1.Controls.Add(ctrl);
        rpt1.Controls.Add(new LiteralControl("<BR>"));
    }
}

protected void btnAddVisa_Click(object sender, EventArgs e)
{
    Button thisButton = (Button)sender;
    List<string> temp = null;
    var uc = (VisaUserControl)this.LoadControl(@"VisaUserControl.ascx");

    string id = Guid.NewGuid().ToString();
    uc.ID = id;

    temp = NoOfControls;
    temp.Add(id);
    NoOfControls = temp;
    rpt1.Controls.Add(uc);
    rpt1.Controls.Add(new LiteralControl("<BR>"));
}

private void GenerateControls1()
{
    foreach (string i in NoOfControls)
    {
        ExperienceUserControl ctrl = (ExperienceUserControl)Page.LoadControl("ExperienceUserControl.ascx");

        ctrl.ID = i;
        this.rpt1.Controls.Add(ctrl);
        rpt2.Controls.Add(new LiteralControl("<BR>"));
    }
}

protected void btnAddExperience_Click(object sender, EventArgs e)
{
    List<string> temp = null;
    var uc = (ExperienceUserControl)this.LoadControl(@"ExperienceUserControl.ascx");

    string id = Guid.NewGuid().ToString();
    uc.ID = id;

    temp = NoOfControls;
    temp.Add(id);
    NoOfControls = temp;
    rpt2.Controls.Add(uc);
    rpt2.Controls.Add(new LiteralControl("<BR>"));
}

有什么想法吗？提前致谢

Answer 1

我相信你应该能够检查：

Request.Form.Get("__EVENTTARGET")
Request.Form.Get("__EVENTARGUMENT")

要做到这一点，目标具有控件的唯一ID，并且参数具有事件args。我以前用过;然而，并非一切都可以设定这些价值。此外，按钮单击事件在LoadViewState之后才会触发，因此您无法在其中放置一些内容来设置布尔值。

Answer 2

btnAddExperience_Click事件将在LoadViewState事件后执行（也许阅读this article会有益）。

我建议使用表单字段来表示已单击此按钮：

<script type="text/javascript">

    function setButtonClickedField()
    {
        document.getElementById("hidButtonClicked").value = "true";
    }

    function resetButtonClickedField()
    {
        document.getElementById("hidButtonClicked").value = "false";
    }

    // use this or a cross-browser attach event to attach the reset to the window/document onload event
    var tempFunction;

    if (window.onload)
    {
        tempFunction = window.onload;
    }

    window.onload = function()
    {
        if (tempFunction)
        {
            tempFunction();
        }

        resetButtonClickedField();
    }

</script>

<input type="hidden" id="hidButtonClicked" name="hidButtonClicked" value="false" />

<asp:Button runat="server" ID="btnAddExperience" OnClick="btnAddExperience_Click" OnClientClick="setButtonClickedField" Text="Add Experience" />

然后在代码背后：

protected override void LoadViewState(object savedState)
{
    base.LoadViewState(savedState);

    bool btnAddExperienceClicked = bool.Parse(Request.Form["hidButtonClicked"]);

    if (btnAddExperienceClicked == true)   
    {
        GenerateControls();
    } 

    GenerateControls1();
}

Answer 3

您可以在表单/控件中声明一个bool来存储按钮的状态，然后使用按钮的MouseDown和MouseUp事件来设置bool值。然后在LoadViewState方法中检查bool的值。

public partial class Form1 : Form
{
    bool buttonClicked = false;

    public Form1()
    {
        InitializeComponent();
    }

    private void button1_MouseDown(object sender, MouseEventArgs e)
    {
        buttonClicked = true;
    }

    private void button1_MouseUp(object sender, MouseEventArgs e)
    {
        buttonClicked = false;
    }

    private void LoadViewState()
    {
        if (buttonClicked)
        {
            //Do something
        }
    }
}

如何检查方法中是否单击了按钮？

3 个答案: