Inconvertible type mismatch between sourcecolumn of string and the datacolumn of byte

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C#

Hi,

I am using visual studio 2015 and I need to check username and password from sql database . I am using following sql command to retrieve this information in .net application using c# as language

SELECT * FROM tbl_BankDetail where BankName=@txtBankName and BankId = @BankPassword

command.Parameters.AddWithValue(@BankName;, txtBankName.Text);
command.Parameters.AddWithValue(@BankId;, txtBankPassword.Text);

I have declared the sql database column as Varchar(50) & int

I am getting the error message as

Inconvertible type mismatch between SourceColumn of String and the DataColumn of Byte

Please help, I have tried to convert the format of variable txtBankName.Text and txtBankPassword.

What I have tried:

cast function of sql to change the datatype of sql