C# 从datatable加载标签的文本属性
我想从数据库中的值加载lsbel lbl协定的金额 我的代码是C# 从datatable加载标签的文本属性,c#,C#,我想从数据库中的值加载lsbel lbl协定的金额 我的代码是 public void Vehiclenocomboboxload() { OleDbConnection oleDbConnection1 = new System.Data.OleDb.OleDbConnection(connString); oleDbConnection1.Open(); OleDbCommand oleDbCommand1
public void Vehiclenocomboboxload()
{
OleDbConnection oleDbConnection1 = new System.Data.OleDb.OleDbConnection(connString);
oleDbConnection1.Open();
OleDbCommand oleDbCommand1 = new System.Data.OleDb.OleDbCommand("SELECT driverassignmastertable.drivername, driverassignmastertable.vehicleno, driverassignmastertable.amount, driverassignmastertable.driverpk FROM driverassignmastertable WHERE(((driverassignmastertable.jobcodepk)= @jobcodepk))", oleDbConnection1);
oleDbCommand1.Parameters.AddWithValue("@jobcodepk", cmbjobcode.SelectedValue);
OleDbDataReader reader = oleDbCommand1.ExecuteReader();
DataTable dt = new DataTable();
dt.Columns.Add("vehicleno", typeof(string));
dt.Columns.Add("drivername", typeof(string));
dt.Columns.Add("amount", typeof(int));
dt.Columns.Add("driverpk", typeof(int));
dt.Load(reader);
if (dt.Rows.Count == 0)
{
MessageBox.Show("No vehicle Assigned to this Jobcode");
cmbVehicleno.DataSource = null;
txtvehicleno.Text = "";
}
else
{
cmbVehicleno.ValueMember = "driverpk";
cmbVehicleno.DisplayMember = "vehicleno";
lblagreeamount.Text = "amount"
cmbVehicleno.DataSource = dt.DefaultView;
}
oleDbConnection1.Close();
}
一切都很好,但我的问题是我的lblagreed数量并没有从数据库中获得任何值
我的代码部分是
lblagreeamount.Text=“金额”
有人能推荐其他数据绑定方法吗?使用这个
lblagreeamount.Text = dt.Row[0]["amount"].ToString();
就用这个
lblagreeamount.Text = dt.Row[0]["amount"].ToString();
您没有为标签指定值,只指定了静态“数量”: 您需要读取
数据表
第一行的相应字段:
lblagreeamount.Text = dt.Rows[0].Field<int>("amount").ToString();
lblagreeamount.Text=dt.Rows[0]。字段(“金额”).ToString();
您没有为标签指定值,只有静态“数量”:
您需要读取数据表
第一行的相应字段:
lblagreeamount.Text = dt.Rows[0].Field<int>("amount").ToString();
lblagreeamount.Text=dt.Rows[0]。字段(“金额”).ToString();
谢谢,先生,但我觉得很容易,这可能是我的错误谢谢,先生,但我觉得很容易,这可能是我的错误