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private void button2_Click(object sender, EventArgs e)
{
if (textBox4.Text == "")
{
MessageBox.Show("ÇëÊäÈëÒª²éÕÒµÄѧÉúµÄÐÕÃû");
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}
string txt1 = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=Student1.mdb";
string txt2 ="selcet * from Student where SutdentName='"+textBox4.Text+"'";
OleDbConnection conn = new OleDbConnection(txt1);
conn.Open();
DataTable dt = new DataTable();
OleDbDataAdapter dar=new OleDbDataAdapter(txt2,conn);
dar.Fill(dt);
dataGridView1.DataSource = dt.DefaultView;
}
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