Asp.net: August 2018

Combobox:

private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)

{

this.textBox1.Text = comboBox1.SelectedItem.ToString();

textBox2.Text = string.Empty;

foreach (var item in comboBox1.Items)

textBox2.Text += item.ToString();

}

//to get the particular data

foreach(DataRowView item in cmbUser.Items)

    if(item.Row[0].ToString() == "something")\\gets value displayed

        //do something

//using for loop

for (int i = 0; i < myComboBox.Items.Count; i++)

     string value = myComboBox.GetItemText(myComboBox.Items[i]);

Listbox:

if (ListBox1.Items.Count > 0)

            for (int i = 0; i < ListBox1.Items.Count; i++)

                if (ListBox1.Items[i].Selected)

                    string selectedItem = ListBox1.Items[i].Text;

                    //insert command

public string GetListBoxSelStringInComma(ListBox Listbox1)

string selectedItem = "";

if (Listbox1.Items.Count > 0)

for (int i = 0; i < Listbox1.Items.Count; i++)

if (Listbox1.Items[i].Selected)

if (selectedItem == "")

selectedItem = Listbox1.Items[i].Text;

else

selectedItem += "," + Listbox1.Items[i].Text;

return selectedItem;

Gridview:

SP:

protected void Page_Load(object sender, EventArgs e)

    if (!IsPostBack)

        GridView1.DataSource = GetData();

        GridView1.DataBind();

DataTable GetData()

    DataTable dt = new DataTable();

    using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["testconection"].ConnectionString))

        con.Open();

        using (SqlCommand cmd = new SqlCommand("select id , name from tableName ",con))

            SqlDataAdapter adpt = new SqlDataAdapter(cmd);

            adpt.Fill(dt);

    return dt;

Sql:

protected void Page_Load(object sender, EventArgs e){

    if(!IsPostBack)

        BindGridView();

private void BindGridView() {

    DataTable dt = new DataTable();

    SqlConnection con = null;

    try {

        string sQuery = "SELECT ID, Name, Salary FROM EmpDetail";

        SqlConnection con = new SqlConnection(sConnectionString);

        con.Open();

        SqlCommand cmd = new SqlCommand(sQuery, con);

        SqlDataReader sdr = cmd.ExecuteReader();

        dt.Load(sdr);

        Gridview1.DataSource = dt;

        Gridview1.DataBind();

    catch{ }

    finally{

        dt.Dispose();

        con.Close();

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