如何检查变量是否为字符串

Question

I have a simple problem,

dtERP value = 2885,78,89,78A;

for (int i = 0; i < dtERP.Rows.Count; i++)
{
    for (int j = 0; j < dtERP.Columns.Count; j++)
    {
        object field = dtERP.Rows[j]["QTY"];
        if (field != int)
        {

        }
    }
}

How can I validate my field if the value is string?

Answer 1

You can use the is operator. Something like this:

if(field is string)

Answer 2

您可以在变量/实例上执行.GetType() 。