Common function to validate IFSC code using Regular Expressions in ASP.Net

Hi bhushan98,

Create a separate class file and write the code to validate the IFSC code. Then call the method in your required page.

Please take reference to the below code and correct your code.

HTML

<div>
    <asp:TextBox runat="server" ID="txtIFSCCode" />
    <asp:Button ID="Button1" Text="Validate" runat="server" OnClick="Validate" />
</div>

Code

CS.aspx.cs

protected void Validate(object sender, EventArgs e)
{
    IFSC ifsc = new IFSC();
    bool isValid = ifsc.ValidateIFSCCode(txtIFSCCode.Text.Trim());
    Response.Write(isValid ? "Valid" : "Invalid");
}

IFSC.cs

public class IFSC
{
    public bool ValidateIFSCCode(string ifscCode)
    {
        System.Text.RegularExpressions.Regex regx = new System.Text.RegularExpressions.Regex("^[A-Za-z]{4}[0-9]{7}$");
        return regx.Matches(ifscCode).Count > 0 ? regx.Matches(ifscCode)[0].Success : false;
    }
}

Screenshot