When I select bankname from the database table how to fill account number textbox and account type drop down from the datatable in C# windows application

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i have windows application.In that i have two forms one is bankaccount form and checkbook form. In Bank account form i have bankname textbox and accounttype dropdown list and account no textbox.after filling the data i can insert data to sql table.this is im done this.now my problem is in chquebook form bankname dropdown,accountno textbox and account type drop down.banking name is coming from database previously inserted.now i want if i select bankname automatically fill the accountno and accounttype from the datatable.I'm fresher please give me any idea.refer any link.Thanks in Advance.

What I have tried:

public void FillBankName()
        {
            DataRow dr;


            SqlConnection con = new SqlConnection(connection);
            con.Open();
            SqlCommand cmd = new SqlCommand("select bank_Id,bank_Name from bankdetails", con);
            SqlDataAdapter sda = new SqlDataAdapter(cmd);
            DataTable dt = new DataTable();
            sda.Fill(dt);

            dr = dt.NewRow();
            dr.ItemArray = new object[] { 0, "--Select--" };
            dt.Rows.InsertAt(dr, 0);

            comboBox1.ValueMember = "bank_Id";

            comboBox1.DisplayMember = "bank_Name";
            comboBox1.DataSource = dt;

            con.Close();
        }

Posted 7-May-17 23:35pm

Member 13153537

Updated 8-May-17 20:43pm

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Comments

Richard MacCutchan 8-May-17 6:20am

You just need to extract the other details from the database, and display them in the relevant fields on the form.

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shreyal acharya · Accepted Answer · 2017-05-08T20:43:00

Fill Bank Name

C#

public void FillBankName()
        {
            SqlConnection con = new SqlConnection(@"Connection");
            con.Open();
            SqlCommand cmd = new SqlCommand("select Bank_id,Bank_name from Bank_master", con);
            SqlDataAdapter sda = new SqlDataAdapter(cmd);
            DataTable dt = new DataTable();
            sda.Fill(dt);
            Dictionary<string, string> test = new Dictionary<string, string>();
            test.Add("select one", "select one");

            for (int i = 0; i < dt.Rows.Count; i++)
            {
                test.Add(dt.Rows[i]["Bank_name"].ToString(), dt.Rows[i]["Bank_id"].ToString());
            }

            comboBox1.DataSource = new BindingSource(test, null);
            comboBox1.ValueMember = "Value";
            comboBox1.DisplayMember = "Key";
            comboBox1.DataBindings.ToString();
            con.Close();
        }

Fill Bank Type

C#

public void FillBankType()
       {
           SqlConnection con = new SqlConnection(@"Connection");
           con.Open();
           SqlCommand cmd = new SqlCommand("select id,Bank_Type from bank_type", con);
           SqlDataAdapter sda = new SqlDataAdapter(cmd);
           DataTable dt = new DataTable();
           sda.Fill(dt);
           Dictionary<string, string> test = new Dictionary<string, string>();
           test.Add("select one", "0");

           for (int i = 0; i < dt.Rows.Count; i++)
           {
               test.Add(dt.Rows[i]["Bank_Type"].ToString(), dt.Rows[i]["id"].ToString());
           }
           comboBox2.DataSource = new BindingSource(test, null);
           comboBox2.ValueMember = "Value";
           comboBox2.DisplayMember = "Key";
           comboBox2.DataBindings.ToString();
           con.Close();
       }

Form load

C#

private void Form1_Load(object sender, EventArgs e)
       {
           FillBankName();
           FillBankType();
       }

comboBox1_SelectedIndexChanged

C#

string abc = comboBox1.SelectedValue.ToString();
           if (abc != "[select one, select one]" && abc != "select one")
           {
               SqlConnection con = new SqlConnection(@"Connection");
               con.Open();
               SqlCommand cmd = new SqlCommand("select Bank_Number,Bank_Type from Bank_master  where Bank_Id=@Bank_id", con);
               cmd.Parameters.AddWithValue("@Bank_id", comboBox1.SelectedValue.ToString());
               SqlDataAdapter sda = new SqlDataAdapter(cmd);
               DataTable dt = new DataTable();
               sda.Fill(dt);
               if (dt.Rows.Count > 0)
               {
                   textBox1.Text = dt.Rows[0]["Bank_Number"].ToString();
                   comboBox2.SelectedValue = dt.Rows[0]["Bank_Type"].ToString().Trim();
               }
               else
               {
                   MessageBox.Show("Data Not Found");
               }
           }

shreyal acharya · Accepted Answer · 2017-05-07T23:54:00

C#

public void FillBankName()
        {
         //   DataRow dr;
 

            SqlConnection con = new SqlConnection(connection);
            con.Open();
            SqlCommand cmd = new SqlCommand("select bank_Id,bank_Name from bankdetails", con);
            SqlDataAdapter sda = new SqlDataAdapter(cmd);
            DataTable dt = new DataTable();
            sda.Fill(dt);
 
           // dr = dt.NewRow();
           // dr.ItemArray = new object[] { 0, "--Select--" };
           // dt.Rows.InsertAt(dr, 0);
 
            comboBox1.ValueMember = "bank_Id";
 
            comboBox1.DisplayMember = "bank_Name";
            comboBox1.DataSource = dt;
            comboBox1.DataBindings.ToString();
            con.Close();
        }


 private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            SqlConnection con = new SqlConnection(connection);
            con.Open();
            SqlCommand cmd = new SqlCommand("select accountnumber,banktype from bank where bankid=@bankid", con);
            cmd.Parameters.AddWithValue("@bankid",comboBox1.SelectedValue);
            SqlDataAdapter sda = new SqlDataAdapter(cmd);
            DataTable dt = new DataTable();
            sda.Fill(dt);

            textBox1.Text=dt.Rows[0]["accountnumber"].ToString();
           
            SqlCommand cmd2 = new SqlCommand("select type_id,type_name from banktype ", con);
           
            SqlDataAdapter sda2 = new SqlDataAdapter(cmd2);
            DataTable dt2 = new DataTable();
            sda.Fill(dt2);

            comboBox2.DataSource = dt;
            comboBox2.ValueMember = "type_id";

            comboBox2.DisplayMember = "type_name";

            comboBox2.DataBindings.ToString();

            comboBox2.SelectedValue=dt.Rows[0]["banktype"].ToString();
            con.Close();
        }

When I select bankname from the database table how to fill account number textbox and account type drop down from the datatable in C# windows application

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