C# Filter Datagridview | C# Controls Datagridview Filter Data - c# - c# tutorial - c# net



What is Datagridview ?

  • The DataGridView control is designed to be a complete solution for displaying tabular data with Windows Forms.
  • The DataGridView control is highly configurable and extensible, and it provides many properties, methods, and events to customize its appearance and behavior.
  • The DataGridView control provides TextBox, CheckBox, Image, Button, ComboBox and Link columns with the corresponding cell types.
 DataGridview Filter

DataGridview Filter

Filter Data:

  • In C#, the data filtering function support is built in the Data Grid Control.
  • It allows users process data filtering in any columns.
  • When a user’s click on the filter cell, the cell editor will be open and will allow users set the filter condition.
  • In filter cell, when we clicking on the filter icon a menu will be open and provide filter conditions including greater than (>) contains, less than (<), equals to (=), and extra.
  • Developers can also modify the filtering features in C# code in Windows Forms projects.
  • Here in the below table is representing to Windows Forms:
 c-sharp gridview filterdata
  1. Here Fetch Data button will display the data values from the SQL and displays it by clicking it.
  2. Go to tool box and click on the DataGridview option the form will be open.
  3. Go to tool box and click on the button option and put the name as Filter in the button.
  4. Here the text field is specifying to enter the text in text field.

Syntax Example

DataView dv;
dv = new DataView(ds.Tables[0], "name = 'venkat' ", "name Desc",
DataViewRowState.CurrentRows);
dataGridView1.DataSource = dv;
click below button to copy the code. By - c# tutorial - team

C# Sample Code - C# Examples

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;

namespace WikiTechy_Csharp_Windows_Application
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        DataSet ds = new DataSet();
        private void button1_Click(object sender, EventArgs e)
        {
         string connectionString =
         @"Data Source=VENKAT\KAASHIV;Initial Catalog=wikitechy;
         user id = venkat;password=venkat";
         string sql = "SELECT * FROM login_table";
         SqlConnection connection = new SqlConnection(connectionString);
         SqlDataAdapter dataadapter = new SqlDataAdapter(sql, connection);
         connection.Open();
         dataadapter.Fill(ds);
         connection.Close();
         dataGridView1.DataSource = ds.Tables[0];  
        }

        private void button2_Click(object sender, EventArgs e)
        {
            DataView dv;
            dv = new DataView(ds.Tables[0], "name = 'venkat' ",
           "name Desc",DataViewRowState.CurrentRows);                                     
            dataGridView1.DataSource = dv;
        }
    }
}
click below button to copy the code. By - c# tutorial - team
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C# Sample Code - C# Examples

 c-sharp gridview filterdata code
  1. Here DataSet ds = new DataSet(); specifies to Create a new instance of the DataSet class. The DataSet Object represents a complete set of data, including related tables, constraints, and relationships among the tables.
  2. Here SqlConnection connection = new SqlConnection (connectionString); this statement is used to acquire the SqlConnection as a resource.
  3. Here DataView dv; Used to filter in a DataTable, and additionally we can add new rows and modify the text in a DataTable.
  4. Here in this example dv = new DataView(ds.Tables[0], "name = 'venkat' ", "name Desc", DataViewRowState .CurrentRows); specifies to filter only "venkat" name in Dataset to Dataview method.
  5. dataGridView1.DataSource = dv; used to specify the data source of datagridview and the table which will be bind to. When we run the code a window will show with a datagridview that containing all the returning rows.

Sample C# examples - Output :

 c-sharp gridview filterdata code output
  1. Here in this output the Fetch Data button will display the data values from the SQL and displays it by clicking it.
  2. Here in this output table displays the Id "1,2,3" and name "venkat, jln, arun".
  3. Here in this output table displays the button name as Filter.
 c-sharp gridview filterdata code output
  1. Here in this output the Fetch Data button will display the data values from the sql and displays it by clicking it.
  2. Here in this output table displays the Id "1" and name "venkat".
  3. Here in this output we display Filter, the data filter in "venkat" row.


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