Input string was not in a correct format.

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when i try to save the invoice to sql server i get that error "Input string was not in a correct format."
cause the value float
i need to solve it
please help

What I have tried:

C#

for (int i = 0; i < dgv_products_view.Rows.Count-1; i++)
            {
                order.ADD_ORDER_DETAILS(Convert.ToInt32(dgv_products_view.Rows[i].Cells[0].Value),
                    Convert.ToInt32(txt_order_id.Text),
                    Convert.ToInt32(dgv_products_view.Rows[i].Cells[3].Value),
                    dgv_products_view.Rows[i].Cells[2].Value.ToString(),
                    float.Parse(dgv_products_view.Rows[i].Cells[5].Value.ToString()),
                    dgv_products_view.Rows[i].Cells[4].Value.ToString(),
                    dgv_products_view.Rows[i].Cells[6].Value.ToString());
            }

Posted 24-Oct-19 0:20am

ExcliSior

Updated 24-Oct-19 2:27am

Andy Lanng

v2

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srko 24-Oct-19 6:28am

dgv_products_view.Rows[i].Cells[5].Value what value does it contain. What is the exact type? can you provide me an example?

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Andy Lanng · Answer 1 · 2019-10-24T00:28:00

basically, one of your strings isn't an int string.

To work out which one, try separating out your code:

C#

for (int i = 0; i < dgv_products_view.Rows.Count-1; i++)
 {
   var cell0 = Convert.ToInt32(dgv_products_view.Rows[i].Cells[0].Value);
   var orderId = Convert.ToInt32(txt_order_id.Text);
   var cell3 = Convert.ToInt32(dgv_products_view.Rows[i].Cells[3].Value);
   var cell5  = float.Parse(dgv_products_view.Rows[i].Cells[5].Value.ToString());

   order.ADD_ORDER_DETAILS(cell0,orderId,cell3,
         dgv_products_view.Rows[i].Cells[2].Value.ToString(),
         cell5,
         dgv_products_view.Rows[i].Cells[4].Value.ToString(),
         dgv_products_view.Rows[i].Cells[6].Value.ToString());
}

hope that helps ^_^

Richard MacCutchan · Answer 2 · 2019-10-24T02:28:00

C#

order.ADD_ORDER_DETAILS(Convert.ToInt32(dgv_products_view.Rows[i].Cells[0].Value),
Convert.ToInt32(txt_order_id.Text),
Convert.ToInt32(dgv_products_view.Rows[i].Cells[3].Value),

One of those text fields is not a valid number. But putting the conversions inline like that is a very bad idea since it is difficult to find out which. Added to that you should never use Convert.ToInt, as it will potentially crash your application if it is given bad data (as you have seen). Use Int.TryParse so you can capture any bad data and ask the user to fix it.

Input string was not in a correct format.

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