C# 声称我的 SQLite 表不存在，但确实存在

Question

I'm trying to read a table I created with DB Browser for SQLite, but there's a runtime error claiming the database doesn't have the table. But it does. I created it and I can see it in DB Browser.

Here's the code:

    private void PopulateGridCustomers()
    {
        String conString = Properties.Resources.database;
        var con = new SqliteConnection(conString);
        try
        {
            con.Open();
            Console.WriteLine(con.State);
            SqliteCommand cmd = con.CreateCommand();
            cmd.CommandText = "SELECT * FROM Clientes";
            using (SqlCeDataAdapter dataAdapter = new SqlCeDataAdapter(cmd.CommandText, conString))
            {
                DataTable dt = new DataTable();
                dataAdapter.Fill(dt);
                gridCustomers.DataSource = dt;
            }
        }

And a picture showing the table exists indeed:

What could be causing this issue and how to fix it?

Thanks

PS: Please cut me some slack, I'm not a professional developer. I code for myself.

Update: Here's the actual error message:

System.Data.SqlServerCe.SqlCeException: 'The specified table does not exist. 
[ Clientes ]'

UPDATE 2:

Here's the path of the database:

Data Source=C:\Users\charl\OneDrive\Documentos\SBM\Database\SBMTeste.db;

As you can see, it is the very same that shows in DB Browser window. The error I first described occurs if I omit the ".db". If I put the file extension in the string, the following error is thrown:

System.Data.SqlServerCe.SqlCeException: 'The database file may be corrupted. 
Run the repair utility to check the database file. 
[ Database name = C:\Users\charl\OneDrive\Documentos\SBM\Database\SBMTeste.db ]'

UPDATE 3:

Here's the CREATE statement of the table:

CREATE TABLE "Clientes" (
    "id"    INTEGER NOT NULL UNIQUE,
    "nome"  TEXT NOT NULL,
    "telefone1" TEXT,
    "telefone2" TEXT,
    "email" TEXT,
    "endereço"  TEXT,
    "bairro"    TEXT,
    "cidade"    TEXT,
    "data_nascimento"   TEXT,
    "data_cadastro" TEXT DEFAULT CURRENT_TIMESTAMP,
    PRIMARY KEY("id" AUTOINCREMENT),
    UNIQUE("nome","data_nascimento")
)

Answer 1

SqlCe is not Sqlite,

below an extract of my code using sqlite:

public Equity SearchEquityByEpic(string epic)
{
    string query = string.Format("SELECT * from " + Tables.ASSETS_TABLE + " WHERE epic='{0}'", epic);
    Log(query);
    var command = _connection.CreateCommand(query);
    var equities = command.ExecuteQuery<Equity>();
    if (equities.Count == 0)
    {
        return null;
    }
    Equity ret = equities.First();
    return ret;
}

Answer 2

The thing is I messed up when trying to install the packages needed for my application to work with the SQlite database. I endend up installing a lot of unnecessary things and missing using System.Data.SQLite . That way my application was not being able to recognize the.db file hence the "corrupted file" message described in my 3rd update.