Data from SQL Server databse not showing in a DataGridView

Question

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For the populateDataGridView()-method below I have an instance of DataGridView called dtGridView and an instance of a BindingSource called bndSource.

I can see that the data is written to bndSource, but the data does not get from the bndSource to the dtGridView.

My question is:

Why do the data from bndSource not display in dtGridView ?

Best regards,

KL

C#

private void populateDataGridView()
        {
            string connectionString = "Data Source=MY-PC;Initial Catalog=TestDataBase;Integrated Security=SSPI";
            string sqlQuery = "SELECT * From dataTable";
            SqlConnection connection = new SqlConnection(connectionString);
            SqlDataAdapter dataAdapter = new SqlDataAdapter(sqlQuery, connection);
            
            DataTable dataTable = new DataTable();
            
            connection.Open();
            dataAdapter.Fill(dataTable);
            connection.Close();
            bndSource.DataSource = dataTable;
              
            dtGridView.DataSource = bndSource;
        }

Posted 25-Sep-12 4:45am

Kåre Hvid Lind

Updated 25-Sep-12 4:51am

Kenneth Haugland

v2

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Anele Ngqandu · Answer 1 · 2012-09-25T21:08:00

Hi

Please try replace your code with this one below:

C#

string connectionString = "Data Source=MY-PC;Initial Catalog=TestDataBase;Integrated Security=SSPI";
            string sqlQuery = "SELECT * From dataTable";
            SqlConnection connection = new SqlConnection(connectionString);
            SqlCommand dbCmd = new SqlCommand(sqlQuery, connection);
            connection.Open();
            DataSet ds = new DataSet();
            SqlDataAdapter dataAdapter = new SqlDataAdapter();

            dbAdapter.SelectCommand = dbCmd;
            dataAdapter.Fill(ds,"dataTable");  
            dtGridView.DataSource = ds.Tables["dataTable"];
            connection.Close();

ozkary · Answer 2 · 2012-09-25T04:51:00

Solution 1

After setting the DataSource property, you need to call GridView.DataBind()

Posted 25-Sep-12 4:51am

ozkary

v2

Comments

Sandeep Mewara 25-Sep-12 11:02am

Not in Winforms. Only in ASP.NET

Kåre Hvid Lind 25-Sep-12 16:08pm

There is no method called DataBind() for the DataGridView in Visual C# 2012.

Is there an alternative way ?

Best regards,

Kåre

Herman<T>.Instance 25-Sep-12 17:23pm

dtGridView.DataSource = dataTable; is enough. Where does the bndSource as object comes from ?

Kåre Hvid Lind 26-Sep-12 4:45am

Well that does not work either. bndSource is an instance of the BindingSource which manages the communication with the database.

The right number of rows are inserted into the database but the numbers are not showing.

Do you know why ?