请解决C语言中以下代码的错误 [英] please resolve the error of below code in c sharp

问题描述

private void dataGridDetail_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
    {
        if (dataGridDetail.CurrentCell.ColumnIndex == 2)
        {
            var source = new AutoCompleteStringCollection();
            String[] stringArray = Array.ConvertAll<DataRow, String>(products.Select(), delegate(DataRow row) { return (String)row["code"]; });
            source.AddRange(stringArray);

            TextBox prodCode = e.Control as TextBox;
            if (prodCode != null)
            {
                prodCode.AutoCompleteMode = AutoCompleteMode.SuggestAppend;
                prodCode.AutoCompleteCustomSource = source;
                prodCode.AutoCompleteSource = AutoCompleteSource.CustomSource;

            }
        }
    }

该代码中的产品是什么，因为它给出错误的产品，当前上下文中不存在

what is products in this code because it gives error products is not exists in the current context

推荐答案

您在哪里定义产品?

Where did you define products?

String[] stringArray = Array.ConvertAll<datarow,>(products.Select(), delegate(DataRow row) { return (String)row["code"]; });

是在事件范围内还是在全局范围内?您没有提供相应的代码.

如果尚未在全局范围内声明产品实例，则不能在事件范围内使用该产品.

is it within the scope of the event or global scope ? you did not give the code for that.

If you have not declared in the global scope an instance for products you cannot expect to use in the event scope.

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