DataGridView not update after inserting details on another form [C#]

Question

This is the data grid view form, where the 2nd form will show up when Add Member button is clicked.

private void btnAddMember_Click(object sender, EventArgs e)
    {
        Cashier_NewMember F_Cashier_NewMember = new Cashier_NewMember();

        F_Cashier_NewMember.Show();
    }

This is the form where I'll be inserting the member details.

private void btnAddMember_Click(object sender, EventArgs e)
    {
        try
        {
            if (sqlCon.State == ConnectionState.Closed)
                sqlCon.Open();

            if (btnAddMember.Text == "Add Member")
            {

                if (string.IsNullOrWhiteSpace(txtFirstName.Text) || string.IsNullOrWhiteSpace(txtLastName.Text) || string.IsNullOrWhiteSpace(txtMobileNo.Text) || string.IsNullOrWhiteSpace(txtHomeNo.Text) || string.IsNullOrWhiteSpace(txtAddress.Text) || string.IsNullOrWhiteSpace(txtPostcode.Text) || string.IsNullOrWhiteSpace(txtCity.Text) || string.IsNullOrWhiteSpace(txtCountry.Text))
                    MessageBox.Show("All fields are required!", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);

                else if (string.IsNullOrWhiteSpace(txtMemberID.Text))
                    MessageBox.Show("Please generate a Member ID!", "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);

                else
                {
                    SqlCommand sqlCmd = new SqlCommand("AddOrUpdateMembership", sqlCon);
                    sqlCmd.CommandType = CommandType.StoredProcedure;
                    sqlCmd.Parameters.AddWithValue("@mode", "Add");
                    sqlCmd.Parameters.AddWithValue("@Member_ID", txtMemberID.Text);
                    sqlCmd.Parameters.AddWithValue("@Member_Since_Date", dtpMemberSince.Value.Date);
                    sqlCmd.Parameters.AddWithValue("@Title", cmbTitle.GetItemText(cmbTitle.SelectedItem));
                    sqlCmd.Parameters.AddWithValue("@First_Name", txtFirstName.Text.Trim());
                    sqlCmd.Parameters.AddWithValue("@Last_Name", txtLastName.Text.Trim());
                    sqlCmd.Parameters.AddWithValue("@DOB", dtpDOB.Value.Date);
                    sqlCmd.Parameters.AddWithValue("@Gender", cmbGender.GetItemText(cmbGender.SelectedItem));
                    sqlCmd.Parameters.AddWithValue("@Mobile_No", cmbMobileNo.GetItemText(cmbMobileNo.SelectedItem) + txtMobileNo.Text.Trim());
                    sqlCmd.Parameters.AddWithValue("@Home_No", cmbHomeNo.GetItemText(cmbHomeNo.SelectedItem) + txtHomeNo.Text.Trim());
                    sqlCmd.Parameters.AddWithValue("@House_Address", txtAddress.Text.Trim());
                    sqlCmd.Parameters.AddWithValue("@Post_Code", txtPostcode.Text.Trim());
                    sqlCmd.Parameters.AddWithValue("@City", txtCity.Text.Trim());
                    sqlCmd.Parameters.AddWithValue("@City_State", txtState.Text.Trim());
                    sqlCmd.Parameters.AddWithValue("@Country", txtCountry.Text.Trim());

                    sqlCmd.ExecuteNonQuery();
    }

This is the code I used to fill up the data gird view

public void FillDataGridView()
    {
        Cashier_NewMember F_Cashier_NewMember = new Cashier_NewMember();

        if (sqlCon.State == ConnectionState.Closed)
            sqlCon.Open();

        SqlDataAdapter sqlDa = new SqlDataAdapter("ViewOrSearchMembership", sqlCon);
        sqlDa.SelectCommand.CommandType = CommandType.StoredProcedure;
        sqlDa.SelectCommand.Parameters.AddWithValue("@Member_ID", F_Cashier_NewMember.txtMemberID.Text); 
        DataTable dtbl = new DataTable();
        sqlDa.Fill(dtbl);
        dgvMembershipDetails.DataSource = dtbl;

        sqlCon.Close();
    }

This is the stored procedure code I used to search and fill the data grid view.

CREATE PROCEDURE [dbo].[ViewOrSearchMembership]
    @Member_ID VARCHAR(10)
AS
    SELECT *
    FROM Member
    WHERE Member_ID LIKE @Member_ID + '%'

I've tried adding the FillDataGridView() everywhere, but the data grid view is still not updating.

Answer 1

在分配数据源dgvMembershipDetails.update（）之后尝试此操作

Answer 2

dgvMembershipDetails.Databind（）应该放在分配数据源行之后。

Answer 3

make sure you dgvMembershipDetails modifiers was public then try to clear datagridview before fill it

public void FillDataGridView(){
    Cashier_NewMember F_Cashier_NewMember = new Cashier_NewMember();

    if (sqlCon.State == ConnectionState.Closed)
        sqlCon.Open();

    SqlDataAdapter sqlDa = new SqlDataAdapter("ViewOrSearchMembership", sqlCon);
    sqlDa.SelectCommand.CommandType = CommandType.StoredProcedure;
    sqlDa.SelectCommand.Parameters.AddWithValue("@Member_ID", F_Cashier_NewMember.txtMemberID.Text); 
    DataTable dtbl = new DataTable();
    sqlDa.Fill(dtbl);
    dgvMembershipDetails.DataSource =null;
    dgvMembershipDetails.DataSource = dtbl;

    sqlCon.Close();
}