List of Databases from SQL Server

Question

Write now my connection string is like so:
con.ConnectionString = @"Server=servername;Database=DatabaseName;Trusted_Connection=True;";
I am trying to make my program a bit more "interactive" so the user can choose which database within the server to view in the datagridview (along with the list of tables).
Am I supposed to remove the Database=DatabaseName portion of my connection string, and then the query "select * from master.dbo.sysdatabases" to get the list of Databases available? Would "select * from master.dbo.systables" give me a
list of tables within any specific database?
Thanks in advance.
-Nothing to see. Move along.

Answer 1

Thanks for the answer. With your help I successfuly integrated comboboxes to select the database and the related tables for each. Here is the code:
private void Form1_Load(object sender, EventArgs e)
{ loadConstructor(); }
//user selects an item in the Database combobox
private void cbx_Databases_SelectedIndexChanged(object sender, EventArgs e)
{ cbxDatabaseChange(); }
private void loadConstructor()
setPermissions();
con.ConnectionString = @"Server=serverName; Trusted_Connection=True;";
getDatabaseList();
private void setPermissions()
//DGV is read only!
dataGridView1.AllowUserToAddRows = false;
dataGridView1.AllowUserToDeleteRows = false;
dataGridView1.EditMode = DataGridViewEditMode.EditProgrammatically;
private void getDatabaseList()
//Get the list of databases from the server
cmd.Connection = con; cmd.CommandText = "select * from master.sys.sysdatabases;";
try
con.Open();
dataReader = cmd.ExecuteReader();
dataReader.Read();
if (dataReader.HasRows)
while (dataReader.Read())
{ cbx_Databases.Items.Add(dataReader.GetString(0)); }
else
{ MessageBox.Show("No databases found in the following connection string: '" + con + "'"); }
con.Close();
catch (Exception ex)
{ MessageBox.Show("Someone set us up the bomb! " + ex.ToString()); }
if (cbx_Databases.Items.Count > 0)
{ cbx_Databases.SelectedIndex = 0; }
private void cbxDatabaseChange()
//Now that we know the name of the database (user selected in combobox)
//Change the connection string accordingly
setConString(cbx_Databases.SelectedItem.ToString());
//get the tables using the new connection string
getTableNames();
//change the connection string to include the database name (string db)
private void setConString(string db)
{ con.ConnectionString = @"Server=serverName; Database=" + db + "; Trusted_Connection=True;"; }
private void getTableNames()
cbx_Tables.Items.Clear();
cmd.Connection = con; cmd.CommandText = "select * from " + cbx_Databases.Text + ".sys.tables;";
try
con.Open();
dataReader = cmd.ExecuteReader();
dataReader.Read();
if (dataReader.HasRows)
while (dataReader.Read())
{ cbx_Tables.Items.Add(dataReader.GetString(0)); }
con.Close();
if (cbx_Tables.Items.Count > 0)
cbx_Tables.Enabled = true;
cbx_Tables.SelectedIndex = 0;
catch (Exception ex)
{ MessageBox.Show("Someone set us up the bomb! " + ex.ToString()); }
if (cbx_Tables.Items.Count > 0)
{ cbx_Tables.SelectedIndex = 0; }