[英]Counting row from a specific DataRow
我从ComboBox中选择了一个DataRow
(dr1),并且我想从选择的DataRow
计算行数。
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
string searchfor = comboBox1.Text;
int results = 0;
DataRow[] returnedrows;
returnedrows = ds1.Tables["workers"].Select("first_name='" + searchfor + "'");
results = returnedrows.Length;
if (results > 0)
{
DataRow dr1;
dr1 = returnedrows[0];
textBox1.Text = dr1[1].ToString(); textBox2.Text = dr1[2].ToString();
textBox3.Text = dr1[3].ToString(); textBox4.Text = dr1[4].ToString();
textBox5.Text= dr1[5].ToString();
}
else
{
MessageBox.Show("no such records");
}
表格是什么对象? 它是数据表吗? 尝试类似:
var result = ds1.Tables["workers"].Where(t => t.first_name == searchfor);
int resultCount = result.Count();
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