此种错误非常容易理解，对于没有超载的方法“CreateProduct”有9个冲突。如
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Line 65: {
Line 66: string categoryId = Request.QueryString["CategoryID"];
Line 67: bool success = CatalogAccess.CreateProduct(categoryId,newName.Text,
newDescription.Text,newPrice.Text,newPrice.Text,newImage1FileName.Text,
newImage2FileName.Text,newOnDepartmentPromotion.Checked.ToString(),
newOnCatalogPromotion.Checked.ToString());
Line 68: statusLabel.Text = success ? "Insert successful" : "Insert failed";
Line 69: BindGrid();
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很明显，我这里多了个newPrice.text,因为我在CatalogAccesss中的CeateProduct方法中只定义了8个参数，而这里有9个就错了。
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