datagridview

问题 I have the following code that I want to use to display an image in a DataGridView cell: dgvInventory.Item(7, i).Value = My.Resources.ResourceManager.GetObject("picture") But instead of displaying the required image, it shows System.Drawing.Bitmap in the cell. Please note that the DataGridView table was created at run time, so I know I am supposed to change the column property to be an DataGridViewImageColumn but I just could not figure out how to. Thanks in advance Please I really need help

问题 If a certain condition is met I want to change the outline of the DataGridViewRow to blue to have it stand out. I know it isn't the BackColor since it changes the row's background color. I have tried to change the ForeColor to Blue but nothing changes. I wouldn't believe it is the selection styles since that behavior isn't what I am looking for. Any suggestions to get this behavior? item below is a DataGridViewRow. item.DefaultCellStyle.ForeColor = Color.Blue item.DefaultCellStyle.BackColor =

问题 I am trying to make copy and pasting within a DataGridView to act similarly to Excel. My current code performs this with the exception of the first cell, which seems to be pasting all contents from the clipboard into the first cell. Below is the code I am using on the cell_keydown event. Just to clarify, if I copy the following: I get the result: The pasted data, does have a space between the two dates prior to clicking off the cell. If anyone has a better way to accomplish what I am

问题 Have one hidden column with encrypted values and i want to copy and decrypt these values to another column, for speed up this process i'm using parallel for loop, but it's working only on my desktop PC, when i tried it on my notebook i get these errors: DataTable internal index corrupted: '5' DataTable internal index corrupted: '13' public void LoadKeyStarter() { DataTable dt; DataSet DS = new DataSet(); mySqlDataAdapter.Fill(DS); dt = DS.Tables[0]; dt.Columns.Add("Decrypted", typeof(System

问题 I have a dataGridView that I populate with a list of files. I'd like to be able to remove some of those entries by selecting the entry (by clicking it) and then pressing the delete key. Here's the code I have so far: private void DataGrid_KeyDown(object sender, KeyEventArgs e) { if (e.KeyCode == Keys.Delete) { foreach (DataGridViewRow r in DataGrid.SelectedRows) { if (!r.IsNewRow) { DataGrid.Rows.RemoveAt(r.Index); } } } } The problem is that it defines selected rows as all rows that were at

问题 I need help adding rows to datagridwiev using list. I have a class public class GridObject { public string Worker { get; set; } [DisplayName("Item name")] public string ItemName { get; set; } public int Price { get; set; } public int Quantity { get; set; } } And i am making win form app that sould display slod items in datagridview. By now i made it do it like this private void btnCash_Click(object sender, EventArgs e) { dt = new System.Data.DataTable(); using (SqlConnection con = Helper

问题 I need help adding rows to datagridwiev using list. I have a class public class GridObject { public string Worker { get; set; } [DisplayName("Item name")] public string ItemName { get; set; } public int Price { get; set; } public int Quantity { get; set; } } And i am making win form app that sould display slod items in datagridview. By now i made it do it like this private void btnCash_Click(object sender, EventArgs e) { dt = new System.Data.DataTable(); using (SqlConnection con = Helper

问题 In my dataGridView cells values are 0's and 1's. I have to set 0 to A and 1 to P by using following code for this operation. foreach (DataGridViewRow row in dataGridView1.Rows) { int d = Convert.ToInt32(row.Cells[0].Value); if (d == 0) row.Cells[0].Value = "A"; else row.Cells[0].Value = "P"; } but it gives error, error is like System.Exception: A is not a valid value for Int32. -> System.FormatException: Input string was not in a correct format. at System.Number.StringToNumber(String str,

问题 I have a grid view that is as basic as it can gets. It displays a one-off search result, and does not updates its datasource unless the search button is click again, so I don't think data update is causing the issue. For example, my search returns 30 rows of results, and my full-screen data grid could fit 40 rows without scrolling, there are no flickering. Then I started to slowly reduce the height of the window. Once the grid view height is slightly less than my 30 rows' height it starts to

问题 I have a grid view that is as basic as it can gets. It displays a one-off search result, and does not updates its datasource unless the search button is click again, so I don't think data update is causing the issue. For example, my search returns 30 rows of results, and my full-screen data grid could fit 40 rows without scrolling, there are no flickering. Then I started to slowly reduce the height of the window. Once the grid view height is slightly less than my 30 rows' height it starts to