datagridview

问题 I'm making a program where two databases are merged together.... I can import an excel spreadsheet into a DataGridView with this code: string connectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\test.xls;Extended Properties=""Excel 8.0;HDR=YES;IMEX=1"""; DbProviderFactory factory = DbProviderFactories.GetFactory("System.Data.OleDb"); DbDataAdapter adapter = factory.CreateDataAdapter(); DbCommand selectCommand = factory.CreateCommand(); selectCommand.CommandText = "SELECT *

问题 I'm making a program where two databases are merged together.... I can import an excel spreadsheet into a DataGridView with this code: string connectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\test.xls;Extended Properties=""Excel 8.0;HDR=YES;IMEX=1"""; DbProviderFactory factory = DbProviderFactories.GetFactory("System.Data.OleDb"); DbDataAdapter adapter = factory.CreateDataAdapter(); DbCommand selectCommand = factory.CreateCommand(); selectCommand.CommandText = "SELECT *

问题 I'm making a program where two databases are merged together.... I can import an excel spreadsheet into a DataGridView with this code: string connectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\test.xls;Extended Properties=""Excel 8.0;HDR=YES;IMEX=1"""; DbProviderFactory factory = DbProviderFactories.GetFactory("System.Data.OleDb"); DbDataAdapter adapter = factory.CreateDataAdapter(); DbCommand selectCommand = factory.CreateCommand(); selectCommand.CommandText = "SELECT *

问题 I am working with a DataGridView for the first time and while I have MANY questions, this latest issue is vexing me. Summary of issue: I have a DataGridView (dgv) which I have a set of columns defined. Some readonly some editable. For the editable columns I need four things to occur. 1) Allow Numeric entry 2) Allow maximum of 2 digits 3) Zero Pad any entries <2 digits 4) My ISSUE: If the user types in a two digit number, I want to detect that and TAB to the next column. I cannot get this to

问题 I am working with a DataGridView for the first time and while I have MANY questions, this latest issue is vexing me. Summary of issue: I have a DataGridView (dgv) which I have a set of columns defined. Some readonly some editable. For the editable columns I need four things to occur. 1) Allow Numeric entry 2) Allow maximum of 2 digits 3) Zero Pad any entries <2 digits 4) My ISSUE: If the user types in a two digit number, I want to detect that and TAB to the next column. I cannot get this to

问题 I set the cell background color in a datagridview to yellow via `grid.DefaultCellStyle.BackColor = Color.Yellow;` I see the yellow cells but should the back color property of the cell not also be yellow? I get an "Color[Empty]" instead of color yellow. Why is the color not Yellow if I try the following code? grid.CellClick += new DataGridViewCellEventHandler( (eventsource, cellevent) => { int rowIndex = cellevent.RowIndex; int colIndex = cellevent.ColumnIndex; MessageBox.Show(" color: "+ grid

问题 Our app has a list of items displayed in a DataGridView. The first column is a DataGridViewCheckBoxColumn. We want our app to allow the user to click anywhere on the row as a way to select the CheckBox in the first column. We find that if the user clicks directly on the CheckBox, selection/deselection works well. The same is true if the user clicks on the data in the other columns. However, if the user clicks just to one side of the checkbox, we get strange behavior. The CheckBox in that row

问题 Our app has a list of items displayed in a DataGridView. The first column is a DataGridViewCheckBoxColumn. We want our app to allow the user to click anywhere on the row as a way to select the CheckBox in the first column. We find that if the user clicks directly on the CheckBox, selection/deselection works well. The same is true if the user clicks on the data in the other columns. However, if the user clicks just to one side of the checkbox, we get strange behavior. The CheckBox in that row

问题 I have a datagridview that is databound. How can I cancel the checkbox being checked in the datagridview if some condition is not met? private void dataGridViewStu_CellContentClick(object sender, DataGridViewCellEventArgs e) { dataGridViewStu.CommitEdit(DataGridViewDataErrorContexts.Commit); } private void dataGridViewStu_CellValueChanged(object sender, DataGridViewCellEventArgs e) { } 回答1: One possible way is to handle the CurrentCellDirtyStateChanged event on DataGridView . Check your

问题 I am trying to bind my objects by columns in the datagridview component but I could not find any way to do it. This is an example of what I am trying to achieve. I have the Emp class public class Emp { public int ID { get; set; } public string Name { get; set; } public string City { get; set; } public Emp(int id, string name, string city) { this.ID = id; this.Name = name; this.City = city; } } and an array of Emp var arrEmp = new[] { new Emp( 1, "Devesh Omar", "Noida"), new Emp( 2, "Roli",