c# - 无法将字符串转换为字符

Question

昨晚我在这里得到了一些关于获取集合索引的帮助。这是我正在使用的代码。

            System.Text.StringBuilder sb = new System.Text.StringBuilder();

            for (int i = 1; i < _prod.ActiveProductItemCollection.Count; i++)
            {

                sb.Append("<script type='text/javascript'>");
                sb.Append("mboxCreate(\"product_productpage_rec{0}\")", i);
                sb.Append("\"entity.id=" + _prodID + "\",");
                sb.Append("\"entity.categoryId=" + _categoryID + "\",");
                sb.Append("\"entity.name=" + _prod.ActiveProductItemCollection[i].Title + "\",");
                sb.Append("\"entity.pageURL=" + Request.Url.ToString() + "\",");
                //The following value has been taken from the productImageControl code behind.
                //Might have to refactor in future as a property of the image control.
                string filename = AppSettingsManager.Current.ProductImagePathLarge + _prod.ActiveProductItemCollection[i].Sku
                    + AppSettingsManager.Current.ProductImageExtension;
                sb.Append("\"entity.thumbnailURL=" + filename + "\",");
                sb.Append("\"entity.inventory=" + _prod.ActiveProductItemCollection.Count + "\",");
                sb.Append("\"entity.value=" + _prod.ActiveProductItemCollection[i].ActualPrice + "\",");
                sb.Append("\"entity.ProductItemID=" + _prod.ActiveProductItemCollection[i].Sku + "\",");
                sb.Append("\"entity.addToCartImg=~/Images/Buttons/btn_AddToCartFlat.gif\");<");
                //The last line has to be /script. < inserted on prev line. do not change it or bad things will happen.            
                sb.Append("/script>");
            }
            this.LiteralMBoxScript.Text = sb.ToString();

我想做的是在 productpage_rec 之后获取集合中项目的索引。

例如，第一个产品会生成类似

mboxCreate("product_productpage_rec1"

依此类推集合中的每个产品。当我尝试构建时出现以下错误:

“无法从字符串转换为字符”

它在 product_productpage_rec 上出错了{0}

我错过了什么？

提前致谢。

Answer 1

  sb.AppendFormat("mboxCreate(\"product_productpage_rec{0}\")", i);

应该可以