Csharp/C Sharp/Database ADO.net/Data Bind ListBox — различия между версиями
Admin (обсуждение | вклад) м (1 версия) |
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(нет различий)
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Версия 18:31, 26 мая 2010
Binding database table to ListBox and TextBox, link ListBox and TextBox
<source lang="csharp"> using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; using System.Data.SqlClient;
public class Form1 : System.Windows.Forms.Form { private System.Windows.Forms.ListBox listBox1; private System.Windows.Forms.TextBox textBox1; private System.Windows.Forms.TextBox textBox2; private System.Data.DataSet dataSet1; private System.ruponentModel.Container components = null; public Form1() { InitializeComponent(); } private void InitializeComponent() { this.listBox1 = new System.Windows.Forms.ListBox(); this.textBox1 = new System.Windows.Forms.TextBox(); this.textBox2 = new System.Windows.Forms.TextBox(); this.dataSet1 = new System.Data.DataSet(); ((System.ruponentModel.ISupportInitialize)(this.dataSet1)).BeginInit(); this.SuspendLayout(); this.listBox1.Location = new System.Drawing.Point(8, 8); this.listBox1.Name = "listBox1"; this.listBox1.Size = new System.Drawing.Size(232, 95); this.listBox1.TabIndex = 0; this.textBox1.Location = new System.Drawing.Point(8, 120); this.textBox1.Name = "textBox1"; this.textBox1.TabIndex = 1; this.textBox1.Text = "textBox1"; this.textBox2.Location = new System.Drawing.Point(8, 152); this.textBox2.Name = "textBox2"; this.textBox2.TabIndex = 2; this.textBox2.Text = "textBox2"; this.dataSet1.DataSetName = "NewDataSet"; this.dataSet1.Locale = new System.Globalization.CultureInfo("en-US"); this.AutoScaleBaseSize = new System.Drawing.Size(5, 13); this.ClientSize = new System.Drawing.Size(256, 188); this.Controls.Add(this.textBox2); this.Controls.Add(this.textBox1); this.Controls.Add(this.listBox1); this.Name = "Form1"; this.Text = "Form1"; this.Load += new System.EventHandler(this.Form1_Load); ((System.ruponentModel.ISupportInitialize)(this.dataSet1)).EndInit(); this.ResumeLayout(false); } static void Main() { Application.Run(new Form1()); } private void Form1_Load(object sender, System.EventArgs e) { string connString = "server=(local)\\SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI"; string sql = @"select firstname, lastname from employee "; SqlConnection conn = new SqlConnection(connString); SqlDataAdapter da = new SqlDataAdapter(sql, conn); da.Fill(dataSet1, "employee"); DataTable dt = dataSet1.Tables["employee"]; listBox1.DataSource = dt; listBox1.DisplayMember = "firstname"; textBox1.DataBindings.Add("text", dt, "firstname"); textBox2.DataBindings.Add("text", dt, "lastname"); } }
</source>
Fill data from Database to ListBox
<source lang="csharp">
using System; using System.Diagnostics; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; using System.Data.SqlClient; public class Form1 : System.Windows.Forms.Form {
SqlConnection cn = new SqlConnection("data source=.;database=biblio;uid=admin;pwd=pw"); SqlDataAdapter da = new SqlDataAdapter(); string strSQL = "Select Title, PubID from Titles"; SqlCommand cmd; SqlDataReader Dr; System.Windows.Forms.Button Button1 = new System.Windows.Forms.Button(); System.Windows.Forms.ListBox ListBox1 = new System.Windows.Forms.ListBox(); System.Windows.Forms.TextBox TextBox1 = new System.Windows.Forms.TextBox(); public Form1() { cmd = new SqlCommand(strSQL, cn); this.SuspendLayout(); this.Button1.Location = new System.Drawing.Point(136, 248); this.Button1.Size = new System.Drawing.Size(144, 32); this.Button1.Text = "Get Data"; this.Button1.Click += new System.EventHandler(this.Button1_Click); this.ListBox1.Location = new System.Drawing.Point(48, 64); this.ListBox1.Size = new System.Drawing.Size(312, 160); this.TextBox1.Location = new System.Drawing.Point(48, 24); this.TextBox1.Size = new System.Drawing.Size(328, 20); this.TextBox1.Text = "Hit"; this.AutoScaleBaseSize = new System.Drawing.Size(5, 13); this.ClientSize = new System.Drawing.Size(408, 293); this.Controls.AddRange(new System.Windows.Forms.Control[] { this.Button1, this.ListBox1, this.TextBox1}); this.ResumeLayout(false); } [STAThread] static void Main() { Application.Run(new Form1()); } private void Button1_Click(object sender, System.EventArgs e) { cn.Open(); cmd.rumandText = strSQL + """ + TextBox1.Text + "%""; Dr = cmd.ExecuteReader(); ListBox1.Items.Clear(); ListBox1.BeginUpdate(); while (Dr.Read()){ ListBox1.Items.Add(Dr.GetString(0) + " - " + Dr.GetInt32(1).ToString()); } ListBox1.EndUpdate(); Dr.Close(); }
}
</source>