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我在 C#(Asp.net) 中的标签内动态创建了一个 div 标签，该标签将包含 3 个动态生成的按钮。我只希望当用户将鼠标悬停在表格单元格（td 标记）上时显示 div。我可以通过 .css 实现这一目标吗？

C# 中的动态生成如下所示：

HtmlTableCell cell = (HtmlTableCell)c;

                        HtmlInputButton PopupAddButton = new HtmlInputButton();
                        PopupAddButton.ID = "PBA" + c.ID.ToString();
                        PopupAddButton.Value = "Add";
                        PopupAddButton.Style["Height"] = "14px";
                        PopupAddButton.Style["Width"] = "40px";
                        PopupAddButton.Style.Add(HtmlTextWriterStyle.Top, "-100");
                        PopupAddButton.Style["right"] = "0";
                        PopupAddButton.Style["float"] = "left";
                        PopupAddButton.Style["vertical-align"] = "top";
                        PopupAddButton.Style["font-size"] = "9px";

                        HtmlInputButton PopupEditButton = new HtmlInputButton();
                        PopupEditButton.ID = "PBE" + c.ID.ToString();
                        PopupEditButton.Value = "Edit";
                        PopupEditButton.Style["Height"] = "14px";
                        PopupEditButton.Style["Width"] = "40px";
                        PopupEditButton.Style["top"] = "0";
                        PopupEditButton.Style["right"] = "0";
                        PopupEditButton.Style["float"] = "left";
                        PopupEditButton.Style["vertical-align"] = "top";
                        PopupEditButton.Style["font-size"] = "9px";

                        HtmlInputButton PopupDeleteButton = new HtmlInputButton();
                        PopupDeleteButton.ID = "PBD" + c.ID.ToString();
                        PopupDeleteButton.Value = "Delete";
                        PopupDeleteButton.Style["Height"] = "14px";
                        PopupDeleteButton.Style["Width"] = "40px";
                        PopupDeleteButton.Style["top"] = "0";
                        PopupDeleteButton.Style["right"] = "0";
                        PopupDeleteButton.Style["float"] = "left";
                        PopupDeleteButton.Style["font-size"] = "9px";
                        PopupDeleteButton.Style.Add(HtmlTextWriterStyle.VerticalAlign, "top");


                        PopupAddButton.Attributes.Add("onClick", "AddPopupControlToTableCell('" + cell.ClientID + "', '" + cell.Height.ToString() + "', '" + g_PopupControlId + "');");
                        PopupEditButton.Attributes.Add("onClick", "EditPopupControlToTableCell('" + cell.ClientID + "', '" + cell.Height.ToString() + "', '" + g_PopupControlId + "');");
                        PopupDeleteButton.Attributes.Add("onClick", "DeletePopupControlToTableCell('" + cell.ClientID + "', '" + cell.Height.ToString() + "', '" + g_PopupControlId + "');");

                        HtmlGenericControl ButtonDiv = new HtmlGenericControl("div");
                        ButtonDiv.ID = "buttonBlock" + c.ID.ToString();
                        ButtonDiv.Attributes.Add("class", "buttonBlock");

                        ButtonDiv.Controls.Add(PopupAddButton);
                        ButtonDiv.Controls.Add(PopupEditButton);
                        ButtonDiv.Controls.Add(PopupDeleteButton);

                        cell.Controls.Add(ButtonDiv);

我的 .css 目前看起来像这样

.buttonBlock input{
  display:none;
}
td:hover #buttonBlock input{
 display:inline;
}

但是，这不起作用。我做错了什么？

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1 回答 1

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尝试先修复此代码

td:hover #buttonBlock input{
display:inline;
}

到

td:hover .buttonBlock input{
display:inline;}

您的原件正在寻找 buttonBlock ( #buttonBlock) 的 id，而它应该寻找 buttonBlock ( .buttonBlock)的类

于 2012-05-14T16:01:05.610 回答