I add a button column through the code to the datagridview after assigning the datasource, it shows correctly after loading. then
Add a new row and save it to the database
Retrieve the data from the database
Populate a datatable and assign it to the datasource of the datagridview
For some reason, the button column shifts from the last to second column? Why would that happen?
Because you generating columns automatically, sure you have DataGridView.AutoGenerateColumns = true
After you change DataSource all generated columns are removed and generated again.
But column added manually stay after generated columns was removed and index of manually added column become 0 or 1.
Then again generated columns added after manually added columns
For solution you can add all columns you need manually in the order you need and set DataGridView.AutoGenerateColumns = false
Or change move button column to the place you want manually every time new DataSource is added
Related
I'd like to show a listview in a C# application where every row represents a product so the property "view" is set on "detail". One column (the last one) should be a checkbox because it represents if the product is discountinued.
With the checkboxes property set to true, a checkbox appear in the first column so it doesn't work for my application.
How can add the checkbox to the last column? Thank you
The Checkboxes are always associated with the first Column. However you change re-order the display of the Columns.
All you need to do it go to the Columns designer and set the 1st colum's DisplayIndex to the last column's index.
Or do it in code:
listView1.Columns[0].DisplayIndex = listView1.Columns.Count - 1;
listView1.Invalidate();
Note the Invalidate which is necessary to enforce the display of the new layout..
I have a datagridview that is populated by a combo box with 1 column. I need to be able to select that record and insert values not shown in the datagridview. Normally I would do this when I populate the all the values needed:
newlien.LienReason = (string)row.Cells["LienType"].Value;
newlien.LienNumber = (string)row.Cells["LienNumber"].Value;
Which will not work as the cells are not being populated. I am guessing that there are two solutions: either add the other columns and hide them and then pull the values from hidden cells or some way to get the values of the record without adding the values to the DGV. Either way I have no idea how to do it!
The easiest way to do this is to add the desired column(s) to your DGV and then set visible to false in those DGV column properties. Then you can still pull values from the hidden columns, just like you would from any other column:
//hidden column
newlien.AnotherVariable = (string)row.Cells["HiddenColumn"].Value;
Let me know if this helps.
I have a DataGridView that allows row sorting by clicking on the column headers. I have a row that I wish to be exempt from sorting; that is, I want it to remain at the top. Is there a trick to doing this without rearranging the table after every sort event?
Make your data source a List<> or table, then before sorting, remove the top row from the list while holding on to it in a variable, then do your sorting on the list (or table), then add the row again.
I mean - I write data to database using RadMaskedEditBox. But I load data from database using generated from Add new data source table adapter. So the data from maskededitbox is in the 5th column(I've got 7 columns). I need a GridViewMaskBoxColumn. But new column can be added only as the last column. So I delete column which(contains data from radmaskededitbox) from datagrid, copy its data to gridviewmaskboxcolumn and the add it to datagrid. But when I call update method - all the data from new column dissapears.
How to solve this problem?
You should delete the auto generated column, and add a new GridViewMaskBoxColumn to the desired position. You can use the Insert method of the Columns collection to insert the column at the desired position.
In order to show the data from the database, please make sure that you specify the correct FieldName of the GridViewMaskBoxColumn, pointing to the field in your data table.
Here is a sample:
radGridView1.Columns.Remove(radGridView1.Columns["theDefaultColumnName"]);
GridViewMaskBoxColumn maskCol = new GridViewMaskBoxColumn();
maskCol.FieldName = "dataTableFieldName";
radGridView1.Columns.Insert(4, maskCol);
I used a datagridview in my winform application.
I load datagrid with a dataset that have 4 columns.
Next I want to add a column between column2 & column3.
How to I do this.
Thanks.
You can use Insert method on DataGridView.Columns collection. For example,
var column = new DataGridViewTextBoxColumn();
// initialize column properties
...
myGridView.Columns.Insert(2, column);
Preferably, this should happen after the data binding.
Using the Visual Studio Designer, you can simply add columns of every kind in the options of the DGV.
You can even set the position of the columns by drag&drop.
If you can't or don't want to use the Designer VinayC told you to do it the code-way.