datagridview

问题 Hard to post code, but easy to describe how to repro: Create a new Winforms project (I used VS 2017 and .NET 4.7) Add a DataSet to the project. Within the DataSet, add a DataTable (no adapter). Within the DataTable, add a single column. It will default to varchar, but change it to NOT allow nulls. Add a Form to the project. Add a DataGridView to the form. Set the DataSource for the DGV to the DataTable in the DataSet. Run the program. Click in the single column of the single row. Type some

问题 I would like to get value from row after a user added some row. I have seen this issue Getting user added row in DataGridView I have tried different DataGridView events: UserAddedRow , RowsAdded , RowValidated , RowPrePaint and etc. Everything works wrong. private void sheetDataGridView_UserAddedRow(object sender, DataGridViewRowEventArgs e) { Console.WriteLine(e.Row.Cells[0].Value); } 回答1: Being specific, obviously the grids AllowUserToAddRow is set to true and the underlying data source

问题 I am using Friend WithEvents PersonName As DataGridViewComboBoxColumn as a column in DataGridView and PersonName DataSoucre is bounded to a database. I would like for when the ComboBox Selection is changed it uses that value to query my database Business Object to find the right value then I want to set the value from the query to the column to the right of the one with the ComboBox which is named Colum3 . But am not use how to access each individual event handler for the ComboBox cell, I

问题 I'm trying to use the DataGridView to display a list of objects. In the class that I want to present properties for I have some C# properties and I also want to create properties dynamically for some reasons. Here I have an example, that works fine for the C# property (FeatureId) but the dynamically created property (Name) returns the value of the first instance for all the instances. Why? First a class that implements the ICustomPropertyDescriptor interface public abstract class

问题 i have two DataGridViewComboBoxColumn that i add at run time i need the items of the first DataGridViewComboBoxColumn to stay the same in all the rows of the gridview but i want the items of the second DataGridViewComboBoxColumn to be different from row to the other depending on the selected item of the first DataGridViewComboBoxColumn if we say the first DataGridViewComboBoxColumn represents the locations and the second DataGridViewComboBoxColumn to represent the sublocations. so i want the

问题 i have two DataGridViewComboBoxColumn that i add at run time i need the items of the first DataGridViewComboBoxColumn to stay the same in all the rows of the gridview but i want the items of the second DataGridViewComboBoxColumn to be different from row to the other depending on the selected item of the first DataGridViewComboBoxColumn if we say the first DataGridViewComboBoxColumn represents the locations and the second DataGridViewComboBoxColumn to represent the sublocations. so i want the

问题 In a DataGridView I use this code, in the CellEndEdit event to automatically calculate the amounts multiplied by the quantity: private void myGrid_CellEndEdit(object sender, DataGridViewCellEventArgs e) { DataGridView oDGV = (DataGridView)sender; DataGridViewCell oCell = oDGV.Rows[e.RowIndex].Cells[e.ColumnIndex]; // Only the quantity can be changed if (oCell.Value != DBNull.Value && oCell.OwningColumn.Name == "num") { oDGV.EndEdit(); int nNum = Convert.ToInt16(oCell.Value); decimal nPrice =

来源： https://stackoverflow.com/questions/40433699/show-combobox-for-bool-and-enum-columns-in-datagridview

来源： https://stackoverflow.com/questions/40433699/show-combobox-for-bool-and-enum-columns-in-datagridview

来源： https://stackoverflow.com/questions/33630471/show-html-in-datagridview-control-cell-in-c-sharp-desktop-app