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    DotNet OnPreRender(EventArgs e) 事件常用的方法

    作者:admin 时间:2021-08-23 17:46

    protected override void OnPreRender(EventArgs e)
    1) 加入脚本
    复制代码 代码如下:

    protected override void OnPreRender(EventArgs e)
    {
    base.OnPreRender(e);
    this.Page.RegisterClientScriptBlock("InsertText", this.RenderScript());
    this.Page.RegisterOnSubmitStatement("StorePostBody", "StorePostBody();");
    }

    2) 设定标题
    复制代码 代码如下:

    protected override void OnPreRender(EventArgs e)
    {
    if(_mainTitle != null)
    _mainTitle.Text = ResourceManager.GetString(Title);
    if(_subTitle != null)
    _subTitle.Text = ResourceManager.GetString(SubTitle);
    base.OnPreRender (e);
    }

    3) 设定按钮客户端事件
    复制代码 代码如下:

    protected override void OnPreRender(EventArgs e)
    {
    Submit.Attributes.Add("onclick", "return SubmitSendToFriend('" + From.ClientID + "', '" + To.ClientID + "');");
    }

    4) 设定控件的状态
    复制代码 代码如下:

    protected override void OnPreRender(System.EventArgs e)
    {
    if(replyButton.Visible == false)
    ((Literal)FindControl("Sep1")).Visible = false;
    if(threadSubButton.Visible == false)
    ((Literal)FindControl("Sep3")).Visible = false;
    if(rateButton.Visible == false)
    ((Literal)FindControl("Sep2")).Visible = false;
    base.OnPreRender (e);
    }

    5) 加入脚本块
    复制代码 代码如下:

    protected override void OnPreRender(EventArgs e)
    {
    base.OnPreRender (e);
    StringBuilder sb = new StringBuilder();
    sb.Append(" ");
    sb.Append(" function ToggleRateMenu() {");
    sb.Append(" rateMenu = document.getElementById('RateMenu');");
    sb.Append(" rateButton = document.getElementById('RateButton');");
    sb.Append("");
    sb.Append(" rateMenu.style.left = getposOffset(rateButton, \"left\");");
    sb.Append(" rateMenu.style.top = getposOffset(rateButton, \"top\") + rateButton.offsetHeight;");
    sb.Append("");
    sb.Append(" if (rateMenu.style.visibility == \"hidden\") {");
    sb.Append(" rateMenu.style.visibility = \"visible\";");
    sb.Append(" rateMenu.style.display = 'block';");
    sb.Append(" } else {");
    sb.Append(" rateMenu.style.visibility = \"hidden\";");
    sb.Append(" rateMenu.style.display = 'none';");
    sb.Append(" }");
    sb.Append(" }");
    sb.Append(" ");
    sb.Append(" function getposOffset(what, offsettype){");
    sb.Append(" var totaloffset=(offsettype==\"left\")? what.offsetLeft : what.offsetTop;");
    sb.Append(" var parentEl=what.offsetParent;");
    sb.Append(" while (parentEl!=null){");
    sb.Append(" totaloffset=(offsettype==\"left\")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;");
    sb.Append(" parentEl=parentEl.offsetParent;");
    sb.Append(" }");
    sb.Append(" return totaloffset;");
    sb.Append("}");
    sb.Append(" ");
    Page.RegisterClientScriptBlock("RatePost",sb.ToString());
    jsjbwy
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