DbUpdateException when Inserting Data into ClientInfo Table

Question

Context: I'm developing an application that involves inserting data into a database using Entity Framework. Specifically, I'm trying to insert data into the ClientInfo table, but I'm encountering a System.Data.Entity.Infrastructure.DbUpdateException error.

Error Message: The error message I'm receiving is as follows:

System.Data.Entity.Infrastructure.DbUpdateException: An error occurred while updating the entries. See the inner exception for details.

Steps to Reproduce:

1. User submits a form with client information.
2. The application calls the AddClientInfo method to insert data into the ClientInfo table.
3. The error occurs during the database update.

Code Snippets: Here's the relevant code:

// Code for adding client information
public async Task<bool> AddClientInfo(ClientInfo clientInfo)
{
    try
    {
        // Check if the LoginId exists in the Logins table
        var existingLogin = _unitOfWork.LoginRepository.Get(login => login.id == clientInfo.LoginId && login.email == clientInfo.Email);

        if (existingLogin != null)
        {
            // If a matching login is found, it means the client information can be added.
            // Update the ClientInfo properties
            clientInfo.IsActive = true;
            clientInfo.CreatedBy = null;
            clientInfo.CreatedAt = null;
            clientInfo.ModifiedBy = null;
            clientInfo.ModifiedAt = null;

            // Add the new ClientInfo entity to the DbSet
            _unitOfWork.ClientInfoRepository.Insert(clientInfo);
            await _unitOfWork.SaveAsync(); // Save changes

            return true; // ClientInfo added successfully
        }
        else
        {
            return false;
        }
    }
    catch (Exception ex)
    {
        // The exception occurs here
        Debug.WriteLine($"Error in AddClientInfo: {ex.Message}");

        return false; 
    }
}

Database Schema:

**Database Schema:**
The `ClientInfo` table in my database has the following structure:

- **Table Name:** ClientInfo
- **Columns:**
  1. **Id
  2. **LoginId (Foreign Key):** A reference to the corresponding entry in the Logins table.
  3. **Email:** The email address of the client.
  4. **IsActive:** A boolean flag indicating whether the client is active.
  5. **CreatedBy:** The user or system responsible for creating the client record.
  6. **CreatedAt:** The timestamp when the client record was created.
  7. **ModifiedBy:** The user or system responsible for modifying the client record.
  8. **ModifiedAt:** The timestamp when the client record was last modified.


- **Table Logins
1. id - Primary Key
2. email
3. password
etc


**Constraints:** - There is a foreign key constraint between the `LoginId` column in the `ClientInfo` table and the `Id` column in the `Logins` table.

Database Management System: I'm using Sql Server Management studio

Entity Framework Version: I'm using Entity Framework 6.4.4.

What I've Tried: I have checked for database constraints, verified the database connection, and examined the inner exception (which did not provide specific details).

Expected Outcome: When the AddClientInfo method is called, I expect the data to be inserted into the ClientInfo table without errors.

Actual Outcome: Instead, I'm encountering the DbUpdateException error, and the data is not being inserted.

Any help or guidance on resolving this issue would be greatly appreciated!

Answer 1

As suggested we need the inner exception details to know why. Probably a constraint violation.