I have a form that when I select a column name from a ComboBox, and type in a text box it filters and displays the searched criteria in the DataGridView. When I search for "Reference" which is an int data type, which is also identity, and primary key. I get the error message :
"Cannot perform 'Like' operation on System.Int32 and System.String."
My code is
DataTable dt;
private void searchForm_Load(object sender, EventArgs e)
{
SqlCeConnection con = new SqlCeConnection(@"Data Source=|DataDirectory|LWADataBase.sdf;");
SqlCeDataAdapter sda = new SqlCeDataAdapter("select * from customersTBL", con);
dt = new DataTable();
sda.Fill(dt);
dataGridView1.DataSource = dt;
comboSearch.Items.Add("[Reference]");
comboSearch.Items.Add("[First Name]");
comboSearch.Items.Add("[Surename]");
comboSearch.Items.Add("[Address Line 1]");
comboSearch.Items.Add("[Address Line 2]");
comboSearch.Items.Add("[County]");
comboSearch.Items.Add("[Post Code]");
comboSearch.Items.Add("[Contact Number]");
comboSearch.Items.Add("[Email Address]");
}
private void searchTxt_TextChanged(object sender, EventArgs e)
{
if (comboSearch.SelectedItem == null)
{
searchTxt.ReadOnly = true;
MessageBox.Show("Please select a search criteria");
}
else
{
searchTxt.ReadOnly = false;
DataView dv = new DataView(dt);
dv.RowFilter = "" + comboSearch.Text.Trim() + "like '%" + searchTxt.Text.Trim() + "%'";
dataGridView1.DataSource = dv;
}
}
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