[英]C#, row count in datagridview on button click
I have an inventory application that displays the information in datagridview after entering a part number in a textbox and clicking a search button. 我有一个清单应用程序,可在文本框中输入零件号并单击搜索按钮后,在datagridview中显示信息。 My question is, how do I count the rows that are displayed and put the count in a textbox? 我的问题是,我如何计算显示的行并将该计数放在文本框中? Below is my code to display the rows that relate to the part number entered. 下面是我的代码,用于显示与输入的零件号相关的行。
private void searchPartbtn_Click(object sender, EventArgs e)
{
if (!string.IsNullOrEmpty(partSearch.Text))
{
try
{
connection.Open();
OleDbCommand command = new OleDbCommand();
command.Connection = connection;
string query = "SELECT * FROM Inventory WHERE PartNumber='" + partSearch.Text + "'";
command.CommandText = query;
connection.Close();
OleDbDataAdapter db = new OleDbDataAdapter(command);
DataTable dt = new DataTable();
db.Fill(dt);
dataGridFB.DataSource = dt;
}
catch (OleDbException ex)
{
MessageBox.Show(ex.Message);
connection.Close();
}
searchHide();
connection.Close();
}
}
在try
块的底部try
:
TextBoxField.Text = dt.Rows.Count.ToString();
Use e.rowindex which will tell you the index of the selected row. 使用e.rowindex可以告诉您所选行的索引。 If you are using button then you will need to use a global variable to determine which row has been selected. 如果使用的是按钮,则需要使用全局变量来确定选择了哪一行。
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