CODEWITHSUNDEEP
c#winformsvisual-studio-2012gridviewdatagridview
Shajee Afzal
Shajee Afzal

Reputation: 615

How can I filter a DataGridView?

I have created a simple DataGridView through the toolbox and have selected data through the wizard (no code in .cs file) from a database. It is working flawlessly as you can see in the picture below: DataGridView1

Now I want to filter the entries in it by contact person name. I have a textbox and search button so when the user enters a "contact person name" such as "Altaf" and then clicks on search, the GridView should refresh and only entries with ticketid=4 should appear.

The only code in the .cs file (which is auto-generated) is:

private void Form2_Load(object sender, EventArgs e)
{ 
    this.tblTicketDetailTableAdapter.Fill(this.sTDataSet1.tblTicketDetail); //auto-generated
}

I tried this in a ButtonClick event as suggested by someone but it generates the error: "Cannot interpret token '{' at position 27"

BindingSource bs = new BindingSource();
bs.DataSource = dataGridView1.DataSource;
bs.Filter = issuerNameDataGridViewTextBoxColumn + "like '%" + txtbxSearch.Text.Trim().Replace("'", "''") + "%'";
dataGridView1.DataSource = bs.DataSource;

I have no experience in DataGridViews or WinForms coding, so please explain in detail.

Upvotes: 7

Views: 50615

Answers (4)

Michael Hutter
Michael Hutter

Reputation: 1532

You can use the dataGridView1.Rows[iIndex].Visible in order to filter a dataGridView in case you don't have a datasource. Whereas this may be very slow if the AutoSizeMode of the column widths is enabled. (At least I had this problem).
The solution was to turn the AutoSizeMode off temporarily, then filtering this way is quite fast:

for (int z = 0; z < dataGridView1.Columns.Count; z++)
{ // Disabled AutoSize Mode for all columns
  dataGridView1.Columns[iRow].AutoSizeMode = DataGridViewAutoSizeColumnMode.None;
}

for (int iRow = 0; iRow <= dataGridView1.RowCount; iRow++)
{ // Filtering dataGridView1
  bool bVisibleCondition = ...
  dataGridView1.Rows[iRealRow].Visible = bVisibleCondition;
}

for (int z = 0; z < dataGridView1.Columns.Count; z++)
{ // Enable AutoSize Mode for all columns
  dataGridView1.Columns[z].AutoSizeMode = DataGridViewAutoSizeColumnMode.AllCells;
}

Upvotes: 1

Shajee Afzal
Shajee Afzal

Reputation: 615

Thank you everyone that has answered to my query, I really appreciate your help guys. You guys are the most helpful bunch.

I have solved my problem by doing following modifications to my code : 

    public void btnSearch_Click(object sender, EventArgs e)
    {
        BindingSource bs = new BindingSource();
        bs.DataSource = dataGridView1.DataSource;
        bs.Filter = dataGridView1.Columns[5].HeaderText.ToString() + " LIKE '%" + txtbxSearch.Text + "%'";
        dataGridView1.DataSource = bs;
    }

Thank you again.

Upvotes: 15

Raging Bull
Raging Bull

Reputation: 18737

Try this:

foreach (System.Windows.Forms.DataGridViewRow r in MyGridView.Rows)
{
      if ((r.Cells[5].Value).ToString().ToUpper().Contains(searchText.ToUpper()))
      {
            MyGridView.Rows[r.Index].Visible = true;
            MyGridView.Rows[r.Index].Selected = true;
      }
      else
      {
            MyGridView.CurrentCell = null;
            MyGridView.Rows[r.Index].Visible = false;
      }
 }

Upvotes: 8

nnmmss
nnmmss

Reputation: 2974

I hope I got your problem well

string whereClause = "ContactPerson=" +textbox.text;
(datagridview.DataSource as DataTable).DefaultView.RowFilter = whereClause;

Upvotes: 2

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