SQL statement used in C# program wont recognize database "System.Data.SqlClient.SqlException (0x80131904): Showing Invalid object name 'CDA'."


I am developing a basic C# application that will read folder names and insert them into a DB.

However it keeps throwing

System.Data.SqlClient.SqlException (0x80131904): Invalid object name 'CDA'.

(CDA is name of my database)

This is the code in question

 static void InsertSql(Guid folderGuid, string folderName)
                // Build connection string
                SqlConnectionStringBuilder builder = new SqlConnectionStringBuilder
                    DataSource = "WIN10-LAP-HJP",
                    UserID = "sa",
                    Password = "Mypassword123",
                    InitialCatalog = "master"

                // Connect to SQL
                Console.Write("Connecting to SQL Server ... ");
                using (SqlConnection connection = new SqlConnection(builder.ConnectionString))

                    string query = "INSERT INTO CDA ( FolderName) VALUES (@FolderName )";

                    using (SqlCommand command = new SqlCommand(query, connection))
                        command.Parameters.Add("@FolderID", SqlDbType.UniqueIdentifier).Value = folderGuid;
                        command.Parameters.Add("@FolderName", SqlDbType.NVarChar ).Value = folderName;

                        var result = command.ExecuteNonQuery();

                        // Check Error
                        if (result < 0)
                            Console.WriteLine("Error inserting data into Database!");

            catch (SqlException e)

This is an image of my mssql

This is an image of my mssql. SO the database does exist

My database connection string seems to work

as I do get

connecting to sql server...Done

And then it throws the error.

asked on Stack Overflow Jan 16, 2020 by coderStew • edited Jan 16, 2020 by Suraj Kumar

3 Answers


You are connecting the entire database and does not specify which table in the database it should use. When considering the information you provided.

answered on Stack Overflow Jan 16, 2020 by Wayne McCulloch

Correct the name of your database in the SqlConnectionStringBuilder from master to CDA:

InitialCatalog = "CDA"

Change your insert statement so that it reflects the actual table where you want to save your data:

string query = "INSERT INTO dbo.MyTableTableNameGoesHere ( FolderName) VALUES (@FolderName )";
answered on Stack Overflow Jan 16, 2020 by Thailo

As you said CDA is the database name so the below code should be changed with the table name.

INSERT INTO CDA (FolderName) VALUES (@FolderName) //Change CDA to table name.

It should be

INSERT INTO [CDA].[dbo].[FolderInfo] VALUES (@FolderName)

Apart from the above two correction you need to change the connection string.

InitialCatalog = "master" 

should be

InitialCatalog = "CDA"
answered on Stack Overflow Jan 16, 2020 by Suraj Kumar

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