How to bind gridview from database? - database

Question

using System.Data.SqlClient;
namespace EHR
{
public partial class imagery : Form
{
SqlConnection con = new SqlConnection(#"Data Source=(LocalDB)\v11.0;AttachDbFilename=C:\Users\wittyse\Desktop\database_EHR\EHR.mdf;Integrated Security=True;Connect Timeout=30");
SqlCommand cmd;
DataTable dt2 = new DataTable();
public imagery()
{
InitializeComponent();
}
public void readdatagrid1()
{
//con.Open();
SqlDataAdapter dpeo = new SqlDataAdapter("Select Img_ID,PEOPLE_INFO.people_ID,PEOPLE_INFO.Name,Imgs,Result from PEOPLE_INFO,IMAGERY_DIAGNOSTIC,MG_NAM where IMAGERY_DIAGNOSTIC.Img_ID=MG_NAM.Mg_nm_ID and PEOPLE_INFO.people_ID=IMAGERY_DIAGNOSTIC.People_ID", con);
DataSet dpep = new DataSet();
dpeo.Fill(dpep, "IMAGERY_DIAGNOSTIC");
dataGridView1.DataSource = dpep.Tables["IMAGERY_DIAGNOSTIC"];
con.Close();
}
private void imagery_Load(object sender, EventArgs e)
{
//dataGridView1.DataSource = null;
readdatagrid1();
SqlDataAdapter dz = new SqlDataAdapter("Select * from MG_NAM order by Mg_nm_ID", con);
DataSet dzo = new DataSet();
dz.Fill(dzo, "MG_NAM");
comboBox1.DataSource = dzo.Tables["MG_NAM"];
comboBox1.DisplayMember = "Imgs";
SqlDataAdapter da = new SqlDataAdapter("Select Name from PEOPLE_INFO order by people_ID", con);
DataSet ds = new DataSet();
da.Fill(ds, "PEOPLE_INFO");
comboBox2.DataSource = ds.Tables["PEOPLE_INFO"];
comboBox2.DisplayMember = "Name";
con.Close();
}
public int comck=0;
public int idx;
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
con.Close();
string Query = "Select Mg_nm_ID,Imgs from MG_NAM where Imgs='" + comboBox1.Text + "'";
con.Open();
SqlCommand createCommand = new SqlCommand(Query, con);
SqlDataReader dr = createCommand.ExecuteReader();
while (dr.Read())
{
textBox4.Text = dr.GetInt32(0).ToString();
//textBox1.Text = dr.GetInt32(1).ToString();
idx = Convert.ToInt32(textBox4.Text);
}
dr.Close();
comck = 1;
}
private void button1_Click(object sender, EventArgs e)
{
MessageBox.Show(id+" index is "+comboBox1.SelectedIndex,"info");
}
public int comck2 = 0;
public int id;
private void comboBox2_SelectedIndexChanged(object sender, EventArgs e)
{
con.Close();
string Query = "Select people_ID,Name from PEOPLE_INFO where Name='" + comboBox2.Text + "'";
con.Open();
SqlCommand createCommand = new SqlCommand(Query, con);
SqlDataReader dr = createCommand.ExecuteReader();
while (dr.Read())
{
textBox2.Text = dr.GetInt32(0).ToString();
//textBox1.Text = dr.GetInt32(1).ToString();
id = Convert.ToInt32(textBox2.Text);
}
dr.Close();
comck2 = 1;
}
private void button2_Click(object sender, EventArgs e)
{
if (comck == 0 & comck2 == 0 || textBox3.Text == "")
{
MessageBox.Show("you must select or inter data","info");
}
else
{
con.Close();
cmd = new SqlCommand("Insert into IMAGERY_DIAGNOSTIC(People_ID,Mg_Nam,Result) values ('" + id + "','" + idx + "','" + textBox3.Text + "')", con);
con.Open();
cmd.ExecuteNonQuery();
MessageBox.Show("Added new IMAGERY DIAGNOSTIC ", "ADD", MessageBoxButtons.OK, MessageBoxIcon.Information);
dataGridView1.DataSource = null;
con.Close();
readdatagrid1();
}
// MessageBox.Show("info save"+comboBox1.SelectedIndex," info ");
}
private void button3_Click(object sender, EventArgs e)
{
if (selectgrid == 0)
{ MessageBox.Show("you must select record to delet it","Info",MessageBoxButtons.OK,MessageBoxIcon.Information); }
else
{
cmd = new SqlCommand("Delete From IMAGERY_DIAGNOSTIC Where Img_ID='" + bindex + "'", con);
con.Open();
cmd.ExecuteNonQuery();
MessageBox.Show("You delete recored successfully", "delete", MessageBoxButtons.OK, MessageBoxIcon.Information);
dataGridView1.DataSource = null;
con.Close();
readdatagrid1();
}
}
public int bindex;
public int selectgrid = 0;
private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
if (e.RowIndex >= 0)
{
DataGridViewRow row = this.dataGridView1.Rows[e.RowIndex];
textBox1.Text = row.Cells["People_ID"].Value.ToString(); //roll type to update
comboBox2.Text = row.Cells["Name"].Value.ToString();
textBox3.Text = row.Cells["Result"].Value.ToString();
string dex = row.Cells["Img_ID"].Value.ToString();
bindex = Convert.ToInt32(dex); //Bld_ID in integer format | for Query
selectgrid = 1;
}
}
}
}

Answer 1

replace the following code dataGridView1.DataSource = dpep.Tables["IMAGERY_DIAGNOSTIC"];
with
dataGridView1.DataSource = new BindingSource { DataSource =dpep.Tables["IMAGERY_DIAGNOSTIC"] };