Question

[Form]: ![Form to be Considered][Form]

[Form]:

I have these form from Access. Here, I am developing search application on asp.net. I have 2 heavy databases with same data structure in which one database include approx 12000 fields and another has approx. 9000 records. I want to do search records with any criteria say,

Dealer Number = 3123 and DLicenceNo = 3242314

Here, I am assuming that if user provides a field text, that only considered to be search, and others to be ignored.

Is there anyway to build query for this rather using long if clauses?

Answer 1

Probably needs some tweaking but, start by naming all your textbox controls your column names in your database

var conditionals = new Dictionary<string, string>();

foreach(Control c in Page.Controls)
{
    if (c is TextBox)
    {
        if (!String.IsNullOrEmpty(c.Text))
            conditionals.Add(c.Id, c.Text);
    }
}

From there you could be VERY careful to build a query that only has the right where clauses based on your conditionals dictionary. Ideally you can make sure it’s parameterized some how to avoid all worries of SQL Injection.