Question

我想要做的是当用户点击按钮（“添加到购物车”）时，它会改变颜色并更改为（“添加到购物车”），我设法做到了。

我的查询是当用户再次点击“添加到购物车”按钮时，突出显示将关闭并返回（“添加到购物车”）。一切正常，但是，当我尝试从突出显示中删除所有产品时，一个产品会保持突出显示。例如，我添加了4个产品，当我决定删除它们时，一个产品保持突出显示并具有“添加到购物车”文本。

这是按钮点击的代码：

private void HighLightCartProducts()
    {
        if (Session["MyCart"] != null)
        {
            DataTable dtProductsAddedToCart = (DataTable)Session["MyCart"];
            if (dtProductsAddedToCart.Rows.Count > 0)
            {
                foreach (DataListItem item in dlProducts.Items)
                {
                    HiddenField hfProductID = item.FindControl("hfProductID") as HiddenField; // Getting hidden filed value
                    if (dtProductsAddedToCart.AsEnumerable().Any(row => hfProductID.Value == row.Field<String>("ProductID")))
                    {
                        //item.BackColor =  System.Drawing.Color.Red;

                        Button btnAddToCart = item.FindControl("btnAddToCart") as Button; //item.FinControl finds the item(Button)
                        btnAddToCart.BackColor = System.Drawing.Color.Blue;
                        btnAddToCart.ForeColor = System.Drawing.Color.White;
                        btnAddToCart.Text = "Added to Cart";

                        Image imgGreenstar = item.FindControl("imgStar") as Image;
                        imgGreenstar.Visible = true;
                    }
                    else
                    {
                        Button btnAddToCart = item.FindControl("btnAddToCart") as Button;
                        btnAddToCart.BackColor = System.Drawing.Color.White;
                        btnAddToCart.ForeColor = System.Drawing.Color.Black;
                        btnAddToCart.Text = "Add to Cart";
                        Image imgGreenstar = item.FindControl("imgStar") as Image;
                        imgGreenstar.Visible = false;
                    }
                }
            }
        }
    }

这是高亮产品的代码（工作正常）

 private void RemoveHighLightCartProducts(string ProductId)
    {

        if (Session["MyCart"] != null)
        {
            DataTable dtProductsAddedToCart = (DataTable)Session["MyCart"];
            //delete row which contains product data.

            var ProductRowToBeDeleted = dtProductsAddedToCart.Select("ProductID =" + ProductId);
            foreach (var row in ProductRowToBeDeleted)
            {
                row.Delete();
            }
            foreach (DataListItem item in dlProducts.Items)
            {


                Button btnAddToCart = item.FindControl("btnAddToCart") as Button;
                btnAddToCart.BackColor = System.Drawing.Color.Red;
                btnAddToCart.ForeColor = System.Drawing.Color.White;
                btnAddToCart.Text = "Add to Cart";
                Image imgGreenstar = item.FindControl("imgStar") as Image;
                imgGreenstar.Visible = false;
            }
        }
    }

和unhighlight方法：

{{1}}

请帮帮我，我真的需要做这个工作。谢谢你的承认。

Answer 1

很抱歉在这里问一下，但是你在哪里使用RemoveHighLightCartProducts？你是否在从购物车中取出行之前尝试过？

突出显示并取消突出显示按钮

1 个答案: