Question

Below is my code and I have been trying to color the cells but not sure how to use the “Style” property when my source for grid is a DB. I am new to this so having difficulties getting started.

Some website or pointers would help a lot.

I want to be able to color some background cells or also color some rows or specific columns…Basically everything color related. How can I do this with my current snippet? Also a link to where I can learn more would be appreciated.

LarsTech I am trying to add you to a chat but I dont have enough rep so I think I can’t contact you due to that.

Imports System.Data.SqlClient
Imports System.Collections.Generic

Public Class Form1

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

        Dim connectionString As String = "data source=SQst; database=MVar2; User ID=Wepp; Password=2010Live; Integrated Security=false;"

        Dim sql As String = "SELECT * FROM Prer"

        Dim connection As New SqlConnection(connectionString)

        Dim dataadapter As New SqlDataAdapter(sql, connection)

        Dim ds As New DataSet()

        connection.Open()

        dataadapter.Fill(ds, "Authors_table")

        connection.Close()

        DataGridView1.DataSource = ds

        DataGridView1.DataMember = "Authors_table"
    **DataGridView1.Rows[2].DefaultCellStyle.BackColor = Color.PaleGreen
    DataGridView1.Rows[3].Cells[1].Style.BackColor = Color.Red**    

    End Sub



    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click

        Call PrintDGV.Print_DataGridView(DataGridView1)

    End Sub





End Class

Errors I get:

Error   1   Property access must assign to the property or use its value.   
Error   2   Identifier expected.    
Error   3   Property access must assign to the property or use its value.   
Error   4   Identifier expected.    

I tried:
DataGridView1.Rows(0).Cell(0).Style.BackColor = Color.Red

and I got 1 error:

Error   1   'Cell' is not a member of 'System.Windows.Forms.DataGridViewRow'.   

EDIT: After looking more around the web I got to color selected cells using below code:

DataGridView1.Item(4, 5).Style.BackColor = Color.Red

This however doesn’t color rows or columns so I am still looking to make those things work.

Answer 1

There are a few different ways of doing this. I beliebe that currentcell refers to the current active cell, so coloring based on that after filling your grid will yield no results.

A few ways to do this are:

c#:
For rows/cells:
dataGridView1.Rows[RowNumber].DefaultCellStyle.BackColor = Color.PaleGreen;
dataGridView1.Rows[RowNumber].Cells[1].Style.BackColor = Color.Red;

for columns:
dataGridView1.Columns[ColumnNumber].DefaultCellStyle.BackColor = Color.Black;


VB:
DataGridView1.Rows(0).DefaultCellStyle.BackColor = Color.Green
DataGridView1.Columns(0).DefaultCellStyle.BackColor = Color.Blue

Both of these will apply color to the cell background. Use some logic in order to control how/which cells/rows are being colored.